1
|
Mahalingam S, Bellamkonda R, Kharbanda KK, Arumugam MK, Kumar V, Casey CA, Leggio L, Rasineni K. Role of ghrelin hormone in the development of alcohol-associated liver disease. Biomed Pharmacother 2024; 174:116595. [PMID: 38640709 DOI: 10.1016/j.biopha.2024.116595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/29/2024] [Accepted: 04/10/2024] [Indexed: 04/21/2024] Open
Abstract
Fatty liver is the earliest response of the liver to excessive alcohol consumption. Previously we identified that chronic alcohol administration increases levels of stomach-derived hormone, ghrelin, which by reducing circulating insulin levels, ultimately contributes to the development of alcohol-associated liver disease (ALD). In addition, ghrelin directly promotes fat accumulation in hepatocytes by enhancing de novo lipogenesis. Other than promoting ALD, ghrelin is known to increase alcohol craving and intake. In this study, we used a ghrelin receptor (GHSR) knockout (KO) rat model to characterize the specific contribution of ghrelin in the development of ALD with emphasis on energy homeostasis. Male Wistar wild type (WT) and GHSR-KO rats were pair-fed the Lieber-DeCarli control or ethanol diet for 6 weeks. At the end of the feeding period, glucose tolerance test was conducted, and tissue samples were collected. We observed reduced alcohol intake by GHSR-KOs compared to a previous study where WT rats were fed ethanol diet ad libitum. Further, when the WTs were pair-fed to GHSR-KOs, the KO rats exhibited resistance to develop ALD through improving insulin secretion/sensitivity to reduce adipose lipolysis and hepatic fatty acid uptake/synthesis and increase fatty acid oxidation. Furthermore, proteomic data revealed that ethanol-fed KO exhibit less alcohol-induced mitochondrial dysfunction and oxidative stress than WT rats. Proteomic data also confirmed that the ethanol-fed KOs are insulin sensitive and are resistant to hepatic steatosis development compared to WT rats. Together, these data confirm that inhibiting ghrelin action prevent alcohol-induced liver and adipose dysfunction independent of reducing alcohol intake.
Collapse
Affiliation(s)
- Sundararajan Mahalingam
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA; Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Ramesh Bellamkonda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA; Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Kusum K Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA; Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Madan Kumar Arumugam
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Vikas Kumar
- Mass Spectrometry and Proteomic Core Facility, University of Nebraska Medical Center, Omaha, NE, USA; Department of Genetics, Cell Biology & Anatomy, University of Nebraska Medical Center, Omaha, NE, USA
| | - Carol A Casey
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA; Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Lorenzo Leggio
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse, Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism, Division of Intramural Clinical and Biological Research, National Institutes of Health, Bethesda, Baltimore, MD, USA; Center for Alcohol and Addiction Studies, Department of Behavioral and Social Sciences, Brown University, Providence, RI, USA; Division of Addiction Medicine, Department of Medicine, School of Medicine, Johns Hopkins University, Baltimore, MD, USA; Department of Neuroscience, Georgetown University Medical Center, Washington DC, USA
| | - Karuna Rasineni
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA; Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA.
| |
Collapse
|
2
|
Osna NA, Tikhanovich I, Ortega-Ribera M, Mueller S, Zheng C, Mueller J, Li S, Sakane S, Weber RCG, Kim HY, Lee W, Ganguly S, Kimura Y, Liu X, Dhar D, Diggle K, Brenner DA, Kisseleva T, Attal N, McKillop IH, Chokshi S, Mahato R, Rasineni K, Szabo G, Kharbanda KK. Alcohol-Associated Liver Disease Outcomes: Critical Mechanisms of Liver Injury Progression. Biomolecules 2024; 14:404. [PMID: 38672422 DOI: 10.3390/biom14040404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/20/2024] [Accepted: 03/24/2024] [Indexed: 04/28/2024] Open
Abstract
Alcohol-associated liver disease (ALD) is a substantial cause of morbidity and mortality worldwide and represents a spectrum of liver injury beginning with hepatic steatosis (fatty liver) progressing to inflammation and culminating in cirrhosis. Multiple factors contribute to ALD progression and disease severity. Here, we overview several crucial mechanisms related to ALD end-stage outcome development, such as epigenetic changes, cell death, hemolysis, hepatic stellate cells activation, and hepatic fatty acid binding protein 4. Additionally, in this review, we also present two clinically relevant models using human precision-cut liver slices and hepatic organoids to examine ALD pathogenesis and progression.
Collapse
Affiliation(s)
- Natalia A Osna
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68106, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68106, USA
| | - Irina Tikhanovich
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Martí Ortega-Ribera
- Department of Medicine, Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
| | - Sebastian Mueller
- Center for Alcohol Research, University of Heidelberg, 69120 Heidelberg, Germany
- Viscera AG Bauchmedizin, 83011 Bern, Switzerland
| | - Chaowen Zheng
- Center for Alcohol Research, University of Heidelberg, 69120 Heidelberg, Germany
| | - Johannes Mueller
- Center for Alcohol Research, University of Heidelberg, 69120 Heidelberg, Germany
| | - Siyuan Li
- Center for Alcohol Research, University of Heidelberg, 69120 Heidelberg, Germany
| | - Sadatsugu Sakane
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA
- Department of Surgery, University of California San Diego, La Jolla, CA 92093, USA
| | - Raquel Carvalho Gontijo Weber
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA
- Department of Surgery, University of California San Diego, La Jolla, CA 92093, USA
| | - Hyun Young Kim
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA
- Department of Surgery, University of California San Diego, La Jolla, CA 92093, USA
| | - Wonseok Lee
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA
- Department of Surgery, University of California San Diego, La Jolla, CA 92093, USA
| | - Souradipta Ganguly
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA
- Department of Surgery, University of California San Diego, La Jolla, CA 92093, USA
| | - Yusuke Kimura
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA
- Department of Surgery, University of California San Diego, La Jolla, CA 92093, USA
| | - Xiao Liu
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA
- Department of Surgery, University of California San Diego, La Jolla, CA 92093, USA
| | - Debanjan Dhar
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA
| | - Karin Diggle
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA
- Department of Surgery, University of California San Diego, La Jolla, CA 92093, USA
| | - David A Brenner
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Tatiana Kisseleva
- Department of Surgery, University of California San Diego, La Jolla, CA 92093, USA
| | - Neha Attal
- Department of Surgery, Atrium Health Carolinas Medical Center, Charlotte, NC 28203, USA
| | - Iain H McKillop
- Department of Surgery, Atrium Health Carolinas Medical Center, Charlotte, NC 28203, USA
| | - Shilpa Chokshi
- The Roger Williams Institute of Hepatology, Foundation for Liver Research, London SE59NT, UK
- School of Microbial Sciences, King's College, London SE59NT, UK
| | - Ram Mahato
- Department of Pharmaceutical Science, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE 68106, USA
| | - Karuna Rasineni
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68106, USA
| | - Gyongyi Szabo
- Department of Medicine, Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
| | - Kusum K Kharbanda
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68106, USA
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68106, USA
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
| |
Collapse
|
3
|
Renier TJ, Paetz OR, Paal MC, Long AB, Brown MR, Vuong SH, Perumal SK, Kharbanda KK, Listenberger LL. Changing the phospholipid composition of lipid droplets alters localization of select lipid droplet proteins. MicroPubl Biol 2023; 2023:10.17912/micropub.biology.000960. [PMID: 38021172 PMCID: PMC10656625 DOI: 10.17912/micropub.biology.000960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/30/2023] [Accepted: 10/31/2023] [Indexed: 12/01/2023]
Abstract
Our experiments aim to determine if decreasing the amount of phosphatidylcholine (PC) relative to phosphatidylethanolamine (PE) at the lipid droplet surface changes the localization of specific lipid droplet proteins. We manipulate lipid droplet phospholipids in both a cultured mouse hepatocyte (AML12) cell line and on synthetic lipid droplets. Decreasing the PC:PE ratio increases perilipin 2, decreases DGAT2, and does not change rab18 or lanosterol synthase levels on lipid droplets. These differences may be explained by the distinct structural motifs that mediate the protein-lipid droplet interactions.
Collapse
Affiliation(s)
- Timothy J. Renier
- Departments of Biology and Chemistry, St. Olaf College, Northfield, Minnesota, United States
| | - Olivia R. Paetz
- Departments of Biology and Chemistry, St. Olaf College, Northfield, Minnesota, United States
| | - Matthew C. Paal
- Departments of Biology and Chemistry, St. Olaf College, Northfield, Minnesota, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States
| | - Alex B. Long
- Departments of Biology and Chemistry, St. Olaf College, Northfield, Minnesota, United States
| | - Margaret R. Brown
- Departments of Biology and Chemistry, St. Olaf College, Northfield, Minnesota, United States
| | - Sunny H. Vuong
- Departments of Biology and Chemistry, St. Olaf College, Northfield, Minnesota, United States
| | - Sathish Kumar Perumal
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska, United States
| | - Kusum K. Kharbanda
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska, United States
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska, United States
| | - Laura L. Listenberger
- Departments of Biology and Chemistry, St. Olaf College, Northfield, Minnesota, United States
| |
Collapse
|
4
|
Osna NA, Sherman KE, Mandrekar P, Kharbanda KK. Editorial: Cell-to-cell communications in alcohol-associated, metabolic-related and viral liver diseases. Front Physiol 2023; 14:1269042. [PMID: 37904795 PMCID: PMC10613518 DOI: 10.3389/fphys.2023.1269042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 08/21/2023] [Indexed: 11/01/2023] Open
Affiliation(s)
- Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Medicine, University of Nebraska Medical Center, Omaha, NE, United States
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, United States
| | - Kenneth E. Sherman
- Division of Digestive Diseases, Department of Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, United States
- Gastroenterology Division, Department of Medicine, Massachusetts General Hospital, Boston, MA, United States
| | - Pranoti Mandrekar
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, United States
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Medicine, University of Nebraska Medical Center, Omaha, NE, United States
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| |
Collapse
|
5
|
Arumugam MK, Gopal T, Kalari Kandy RR, Boopathy LK, Perumal SK, Ganesan M, Rasineni K, Donohue TM, Osna NA, Kharbanda KK. Mitochondrial Dysfunction-Associated Mechanisms in the Development of Chronic Liver Diseases. Biology (Basel) 2023; 12:1311. [PMID: 37887021 PMCID: PMC10604291 DOI: 10.3390/biology12101311] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 09/15/2023] [Accepted: 09/25/2023] [Indexed: 10/28/2023]
Abstract
The liver is a major metabolic organ that performs many essential biological functions such as detoxification and the synthesis of proteins and biochemicals necessary for digestion and growth. Any disruption in normal liver function can lead to the development of more severe liver disorders. Overall, about 3 million Americans have some type of liver disease and 5.5 million people have progressive liver disease or cirrhosis, in which scar tissue replaces the healthy liver tissue. An estimated 20% to 30% of adults have excess fat in their livers, a condition called steatosis. The most common etiologies for steatosis development are (1) high caloric intake that causes non-alcoholic fatty liver disease (NAFLD) and (2) excessive alcohol consumption, which results in alcohol-associated liver disease (ALD). NAFLD is now termed "metabolic-dysfunction-associated steatotic liver disease" (MASLD), which reflects its association with the metabolic syndrome and conditions including diabetes, high blood pressure, high cholesterol and obesity. ALD represents a spectrum of liver injury that ranges from hepatic steatosis to more advanced liver pathologies, including alcoholic hepatitis (AH), alcohol-associated cirrhosis (AC) and acute AH, presenting as acute-on-chronic liver failure. The predominant liver cells, hepatocytes, comprise more than 70% of the total liver mass in human adults and are the basic metabolic cells. Mitochondria are intracellular organelles that are the principal sources of energy in hepatocytes and play a major role in oxidative metabolism and sustaining liver cell energy needs. In addition to regulating cellular energy homeostasis, mitochondria perform other key physiologic and metabolic activities, including ion homeostasis, reactive oxygen species (ROS) generation, redox signaling and participation in cell injury/death. Here, we discuss the main mechanism of mitochondrial dysfunction in chronic liver disease and some treatment strategies available for targeting mitochondria.
Collapse
Affiliation(s)
- Madan Kumar Arumugam
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.K.A.); (S.K.P.); (M.G.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Cancer Biology Lab, Centre for Molecular and Nanomedical Sciences, Sathyabama Institute of Science and Technology, Chennai 600119, Tamil Nadu, India
| | - Thiyagarajan Gopal
- Centre for Laboratory Animal Technology and Research, Sathyabama Institute of Science and Technology, Chennai 600119, Tamil Nadu, India; (T.G.); (L.K.B.)
| | | | - Lokesh Kumar Boopathy
- Centre for Laboratory Animal Technology and Research, Sathyabama Institute of Science and Technology, Chennai 600119, Tamil Nadu, India; (T.G.); (L.K.B.)
| | - Sathish Kumar Perumal
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.K.A.); (S.K.P.); (M.G.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.K.A.); (S.K.P.); (M.G.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Karuna Rasineni
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| | - Terrence M. Donohue
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.K.A.); (S.K.P.); (M.G.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| | - Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.K.A.); (S.K.P.); (M.G.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.K.A.); (S.K.P.); (M.G.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| |
Collapse
|
6
|
Bybee G, Moeun Y, Wang W, Kharbanda KK, Poluektova LY, Kidambi S, Osna NA, Ganesan M. Increased liver stiffness promotes hepatitis B progression by impairing innate immunity in CCl4-induced fibrotic HBV + transgenic mice. Front Immunol 2023; 14:1166171. [PMID: 37600826 PMCID: PMC10435739 DOI: 10.3389/fimmu.2023.1166171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 07/17/2023] [Indexed: 08/22/2023] Open
Abstract
Background Hepatitis B virus (HBV) infection develops as an acute or chronic liver disease, which progresses from steatosis, hepatitis, and fibrosis to end-stage liver diseases such as cirrhosis and hepatocellular carcinoma (HCC). An increased stromal stiffness accompanies fibrosis in chronic liver diseases and is considered a strong predictor for disease progression. The goal of this study was to establish the mechanisms by which enhanced liver stiffness regulates HBV infectivity in the fibrotic liver tissue. Methods For in vitro studies, HBV-transfected HepG2.2.15 cells were cultured on polydimethylsiloxane gels coated by polyelectrolyte multilayer films of 2 kPa (soft) or 24 kPa (stiff) rigidity mimicking the stiffness of the healthy or fibrotic liver. For in vivo studies, hepatic fibrosis was induced in C57Bl/6 parental and HBV+ transgenic (HBVTg) mice by injecting CCl4 twice a week for 6 weeks. Results We found higher levels of HBV markers in stiff gel-attached hepatocytes accompanied by up-regulated OPN content in cell supernatants as well as suppression of anti-viral interferon-stimulated genes (ISGs). This indicates that pre-requisite "fibrotic" stiffness increases osteopontin (OPN) content and releases and suppresses anti-viral innate immunity, causing a subsequent rise in HBV markers expression in hepatocytes. In vitro results were corroborated by data from HBVTg mice administered CCl4 (HBVTg CCl4). These mice showed higher HBV RNA, DNA, HBV core antigen (HBcAg), and HBV surface antigen (HBsAg) levels after liver fibrosis induction as judged by a rise in Col1a1, SMA, MMPs, and TIMPs mRNAs and by increased liver stiffness. Importantly, CCl4-induced the pro-fibrotic activation of liver cells, and liver stiffness was higher in HBVTg mice compared with control mice. Elevation of HBV markers and OPN levels corresponded to decreased ISG activation in HBVTg CCl4 mice vs HBVTg control mice. Conclusion Based on our data, we conclude that liver stiffness enhances OPN levels to limit anti-viral ISG activation in hepatocytes and promote an increase in HBV infectivity, thereby contributing to end-stage liver disease progression.
Collapse
Affiliation(s)
- Grace Bybee
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Youra Moeun
- Department of Chemical and Biomolecular Engineering, University of Nebraska at Lincoln, Lincoln, NE, United States
| | - Weimin Wang
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, United States
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Larisa Y. Poluektova
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, United States
| | - Srivatsan Kidambi
- Department of Chemical and Biomolecular Engineering, University of Nebraska at Lincoln, Lincoln, NE, United States
| | - Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| |
Collapse
|
7
|
Arumugam MK, Perumal SK, Rasineni K, Donohue TM, Osna NA, Kharbanda KK. Lipidomic Analysis of Liver Lipid Droplets after Chronic Alcohol Consumption with and without Betaine Supplementation. Biology (Basel) 2023; 12:462. [PMID: 36979154 PMCID: PMC10045066 DOI: 10.3390/biology12030462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 03/04/2023] [Accepted: 03/08/2023] [Indexed: 03/19/2023]
Abstract
The earliest manifestation of alcohol-associated liver disease is hepatic steatosis, which is characterized by fat accumulation in specialized organelles called lipid droplets (LDs). Our previous studies reported that alcohol consumption elevates the numbers and sizes of LDs in hepatocytes, which is attenuated by simultaneous treatment with the methyl group donor, betaine. Here, we examined changes in the hepatic lipidome with respect to LD size and dynamics in male Wistar rats fed for 6 weeks with control or ethanol-containing liquid diets that were supplemented with or without 10 mg betaine/mL. At the time of sacrifice, three hepatic LD fractions, LD1 (large droplets), LD2 (medium-sized droplets), and LD3 (small droplets) were isolated from each rat. Untargeted lipidomic analyses revealed that each LD fraction of ethanol-fed rats had higher phospholipids, cholesteryl esters, diacylglycerols, ceramides, and hexosylceramides compared with the corresponding fractions of pair-fed controls. Interestingly, the ratio of phosphatidylcholine to phosphatidylethanolamine (the two most abundant phospholipids on the LD surface) was lower in LD1 fraction compared with LD3 fraction, irrespective of treatment; however, this ratio was significantly lower in ethanol LD fractions compared with their respective control fractions. Betaine supplementation significantly attenuated the ethanol-induced lipidomic changes. These were mainly associated with the regulation of LD surface phospholipids, ceramides, and glycerolipid metabolism in different-sized LD fractions. In conclusion, our results show that ethanol-induced changes in the hepatic LD lipidome likely stabilizes larger-sized LDs during steatosis development. Furthermore, betaine supplementation could effectively reduce the size and dynamics of LDs to attenuate alcohol-associated hepatic steatosis.
Collapse
Affiliation(s)
- Madan Kumar Arumugam
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Center for Molecular and Nanomedical Sciences, Sathyabama Institute of Science and Technology, Chennai 600119, India
| | - Sathish Kumar Perumal
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Karuna Rasineni
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Terrence M. Donohue
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| |
Collapse
|
8
|
New-Aaron M, Koganti SS, Ganesan M, Kanika S, Kumar V, Wang W, Makarov E, Kharbanda KK, Poluektova LY, Osna NA. Hepatocyte-Specific Triggering of Hepatic Stellate Cell Profibrotic Activation by Apoptotic Bodies: The Role of Hepatoma-Derived Growth Factor, HIV, and Ethanol. Int J Mol Sci 2023; 24:5346. [PMID: 36982417 PMCID: PMC10049507 DOI: 10.3390/ijms24065346] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/28/2023] [Accepted: 03/08/2023] [Indexed: 03/16/2023] Open
Abstract
Liver disease is one of the leading comorbidities in HIV infection. The risk of liver fibrosis development is potentiated by alcohol abuse. In our previous studies, we reported that hepatocytes exposed to HIV and acetaldehyde undergo significant apoptosis, and the engulfment of apoptotic bodies (ABs) by hepatic stellate cells (HSC) potentiates their pro-fibrotic activation. However, in addition to hepatocytes, under the same conditions, ABs can be generated from liver-infiltrating immune cells. The goal of this study is to explore whether lymphocyte-derived ABs trigger HSC profibrotic activation as strongly as hepatocyte-derived ABs. ABs were generated from Huh7.5-CYP2E1 (RLW) cells and Jurkat cells treated with HIV+acetaldehyde and co-culture with HSC to induce their pro-fibrotic activation. ABs cargo was analyzed by proteomics. ABs generated from RLW, but not from Jurkat cells activated fibrogenic genes in HSC. This was driven by the expression of hepatocyte-specific proteins in ABs cargo. One of these proteins is Hepatocyte-Derived Growth Factor, for which suppression attenuates pro-fibrotic activation of HSC. In mice humanized with only immune cells but not human hepatocytes, infected with HIV and fed ethanol, liver fibrosis was not observed. We conclude that HIV+ABs of hepatocyte origin promote HSC activation, which potentially may lead to liver fibrosis progression.
Collapse
Affiliation(s)
- Moses New-Aaron
- Department of Environmental Health, Occupational Health and Toxicology, College of Public Health, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
| | - Siva Sankar Koganti
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Sharma Kanika
- Department of Genetics Cell Biology & Anatomy, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Vikas Kumar
- Department of Genetics Cell Biology & Anatomy, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Weimin Wang
- Department of Genetics Cell Biology & Anatomy, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Edward Makarov
- Department of Genetics Cell Biology & Anatomy, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Larisa Y. Poluektova
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Natalia A. Osna
- Department of Environmental Health, Occupational Health and Toxicology, College of Public Health, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68105, USA
| |
Collapse
|
9
|
Kharbanda KK, Chokshi S, Tikhanovich I, Weinman SA, New-Aaron M, Ganesan M, Osna NA. A Pathogenic Role of Non-Parenchymal Liver Cells in Alcohol-Associated Liver Disease of Infectious and Non-Infectious Origin. Biology (Basel) 2023; 12:255. [PMID: 36829532 PMCID: PMC9953685 DOI: 10.3390/biology12020255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 01/30/2023] [Accepted: 02/02/2023] [Indexed: 02/08/2023]
Abstract
Now, much is known regarding the impact of chronic and heavy alcohol consumption on the disruption of physiological liver functions and the induction of structural distortions in the hepatic tissues in alcohol-associated liver disease (ALD). This review deliberates the effects of alcohol on the activity and properties of liver non-parenchymal cells (NPCs), which are either residential or infiltrated into the liver from the general circulation. NPCs play a pivotal role in the regulation of organ inflammation and fibrosis, both in the context of hepatotropic infections and in non-infectious settings. Here, we overview how NPC functions in ALD are regulated by second hits, such as gender and the exposure to bacterial or viral infections. As an example of the virus-mediated trigger of liver injury, we focused on HIV infections potentiated by alcohol exposure, since this combination was only limitedly studied in relation to the role of hepatic stellate cells (HSCs) in the development of liver fibrosis. The review specifically focusses on liver macrophages, HSC, and T-lymphocytes and their regulation of ALD pathogenesis and outcomes. It also illustrates the activation of NPCs by the engulfment of apoptotic bodies, a frequent event observed when hepatocytes are exposed to ethanol metabolites and infections. As an example of such a double-hit-induced apoptotic hepatocyte death, we deliberate on the hepatotoxic accumulation of HIV proteins, which in combination with ethanol metabolites, causes intensive hepatic cell death and pro-fibrotic activation of HSCs engulfing these HIV- and malondialdehyde-expressing apoptotic hepatocytes.
Collapse
Affiliation(s)
- Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Shilpa Chokshi
- Institute of Hepatology, Foundation for Liver Research, London SE5 9NT, UK
- Faculty of Life Sciences and Medicine, King’s College London, London SE5 8AF, UK
| | - Irina Tikhanovich
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, MO 66160, USA
| | - Steven A. Weinman
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, MO 66160, USA
- Research Service, Kansas City Veterans Administration Medical Center, Kansas City, MO 64128, USA
| | - Moses New-Aaron
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| |
Collapse
|
10
|
Kharbanda KK, Farokhnia M, Deschaine SL, Bhargava R, Rodriguez-Flores M, Casey CA, Goldstone AP, Jerlhag E, Leggio L, Rasineni K. Role of the ghrelin system in alcohol use disorder and alcohol-associated liver disease: A narrative review. Alcohol Clin Exp Res 2022; 46:2149-2159. [PMID: 36316764 PMCID: PMC9772086 DOI: 10.1111/acer.14967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 10/21/2022] [Accepted: 10/28/2022] [Indexed: 11/07/2022]
Abstract
Unhealthy alcohol consumption is a global health problem. Adverse individual, public health, and socioeconomic consequences are attributable to harmful alcohol use. Epidemiological studies have shown that alcohol use disorder (AUD) and alcohol-associated liver disease (ALD) are the top two pathologies among alcohol-related diseases. Consistent with the major role that the liver plays in alcohol metabolism, uncontrolled drinking may cause significant damage to the liver. This damage is initiated by excessive fat accumulation in the liver, which can further progress to advanced liver disease. The only effective therapeutic strategies currently available for ALD are alcohol abstinence or liver transplantation. Any molecule with dual-pronged effects at the central and peripheral organs controlling addictive behaviors and associated metabolic pathways are a potentially important therapeutic target for treating AUD and ALD. Ghrelin, a hormone primarily derived from the stomach, has such properties, and regulates both behavioral and metabolic functions. In this review, we highlight recent advances in understanding the peripheral and central functions of the ghrelin system and its role in AUD and ALD pathogenesis. We first discuss the correlation between blood ghrelin concentrations and alcohol use or abstinence. Next, we discuss the role of ghrelin in alcohol-seeking behaviors and finally its role in the development of fatty liver by metabolic regulations and organ crosstalk. We propose that a better understanding of the ghrelin system could open an innovative avenue for improved treatments for AUD and associated medical consequences, including ALD.
Collapse
Affiliation(s)
- Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Mehdi Farokhnia
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse, Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism, Division of Intramural Clinical and Biological Research, National Institutes of Health, Baltimore and Bethesda, Maryland, USA
- Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
| | - Sara L. Deschaine
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse, Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism, Division of Intramural Clinical and Biological Research, National Institutes of Health, Baltimore and Bethesda, Maryland, USA
| | - Raghav Bhargava
- PsychoNeuroEndocrinology Research Group, Division of Psychiatry, Department of Brain Sciences, Imperial College London, Hammersmith Hospital, London, UK
| | - Marcela Rodriguez-Flores
- PsychoNeuroEndocrinology Research Group, Division of Psychiatry, Department of Brain Sciences, Imperial College London, Hammersmith Hospital, London, UK
| | - Carol A. Casey
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Anthony P. Goldstone
- PsychoNeuroEndocrinology Research Group, Division of Psychiatry, Department of Brain Sciences, Imperial College London, Hammersmith Hospital, London, UK
| | - Elisabet Jerlhag
- Department of Pharmacology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Lorenzo Leggio
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse, Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism, Division of Intramural Clinical and Biological Research, National Institutes of Health, Baltimore and Bethesda, Maryland, USA
- Medication Development Program, National Institute on Drug Abuse Intramural Research Program, National Institutes of Health, Baltimore, Maryland, USA
- Center for Alcohol and Addiction Studies, Department of Behavioral and Social Sciences, Brown University, Providence, Rhode Island, USA
- Division of Addiction Medicine, Department of Medicine, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
- Department of Neuroscience, Georgetown University Medical Center, Washington DC, USA
| | - Karuna Rasineni
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA
| |
Collapse
|
11
|
Osna NA, Rasineni K, Ganesan M, Donohue TM, Kharbanda KK. Pathogenesis of Alcohol-Associated Liver Disease. J Clin Exp Hepatol 2022; 12:1492-1513. [PMID: 36340300 PMCID: PMC9630031 DOI: 10.1016/j.jceh.2022.05.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 05/25/2022] [Indexed: 12/12/2022] Open
Abstract
Excessive alcohol consumption is a global healthcare problem with enormous social, economic, and clinical consequences. While chronic, heavy alcohol consumption causes structural damage and/or disrupts normal organ function in virtually every tissue of the body, the liver sustains the greatest damage. This is primarily because the liver is the first to see alcohol absorbed from the gastrointestinal tract via the portal circulation and second, because the liver is the principal site of ethanol metabolism. Alcohol-induced damage remains one of the most prevalent disorders of the liver and a leading cause of death or transplantation from liver disease. Despite extensive research on the pathophysiology of this disease, there are still no targeted therapies available. Given the multifactorial mechanisms for alcohol-associated liver disease pathogenesis, it is conceivable that a multitherapeutic regimen is needed to treat different stages in the spectrum of this disease.
Collapse
Key Words
- AA, Arachidonic acid
- ADH, Alcohol dehydrogenase
- AH, Alcoholic hepatitis
- ALD, Alcohol-associated liver disease
- ALDH, Aldehyde dehydrogenase
- ALT, Alanine transaminase
- ASH, Alcohol-associated steatohepatitis
- AST, Aspartate transaminase
- AUD, Alcohol use disorder
- BHMT, Betaine-homocysteine-methyltransferase
- CD, Cluster of differentiation
- COX, Cycloxygenase
- CTLs, Cytotoxic T-lymphocytes
- CYP, Cytochrome P450
- CYP2E1, Cytochrome P450 2E1
- Cu/Zn SOD, Copper/zinc superoxide dismutase
- DAMPs, Damage-associated molecular patterns
- DC, Dendritic cells
- EDN1, Endothelin 1
- ER, Endoplasmic reticulum
- ETOH, Ethanol
- EVs, Extracellular vesicles
- FABP4, Fatty acid-binding protein 4
- FAF2, Fas-associated factor family member 2
- FMT, Fecal microbiota transplant
- Fn14, Fibroblast growth factor-inducible 14
- GHS-R1a, Growth hormone secretagogue receptor type 1a
- GI, GOsteopontinastrointestinal tract
- GSH Px, Glutathione peroxidase
- GSSG Rdx, Glutathione reductase
- GST, Glutathione-S-transferase
- GWAS, Genome-wide association studies
- H2O2, Hydrogen peroxide
- HA, Hyaluronan
- HCC, Hepatocellular carcinoma
- HNE, 4-hydroxynonenal
- HPMA, 3-hydroxypropylmercapturic acid
- HSC, Hepatic stellate cells
- HSD17B13, 17 beta hydroxy steroid dehydrogenase 13
- HSP 90, Heat shock protein 90
- IFN, Interferon
- IL, Interleukin
- IRF3, Interferon regulatory factor 3
- JAK, Janus kinase
- KC, Kupffer cells
- LCN2, Lipocalin 2
- M-D, Mallory–Denk
- MAA, Malondialdehyde-acetaldehyde protein adducts
- MAT, Methionine adenosyltransferase
- MCP, Macrophage chemotactic protein
- MDA, Malondialdehyde
- MIF, Macrophage migration inhibitory factor
- Mn SOD, Manganese superoxide dismutase
- Mt, Mitochondrial
- NK, Natural killer
- NKT, Natural killer T-lymphocytes
- OPN, Osteopontin
- PAMP, Pathogen-associated molecular patterns
- PNPLA3, Patatin-like phospholipase domain containing 3
- PUFA, Polyunsaturated fatty acid
- RIG1, Retinoic acid inducible gene 1
- SAH, S-adenosylhomocysteine
- SAM, S-adenosylmethionine
- SCD, Stearoyl-CoA desaturase
- STAT, Signal transduction and activator of transcription
- TIMP1, Tissue inhibitor matrix metalloproteinase 1
- TLR, Toll-like receptor
- TNF, Tumor necrosis factor-α
- alcohol
- alcohol-associated liver disease
- ethanol metabolism
- liver
- miRNA, MicroRNA
- p90RSK, 90 kDa ribosomal S6 kinase
Collapse
Affiliation(s)
- Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
- Department of Internal Medicine, Omaha, NE, 68198, USA
| | - Karuna Rasineni
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
- Department of Internal Medicine, Omaha, NE, 68198, USA
| | - Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
- Department of Internal Medicine, Omaha, NE, 68198, USA
| | - Terrence M. Donohue
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
- Department of Internal Medicine, Omaha, NE, 68198, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
- Department of Internal Medicine, Omaha, NE, 68198, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| |
Collapse
|
12
|
Kharbanda KK, Singal AK, Mueller S, Osna NA. Editorial: Alcohol-associated liver disease—From pathogenesis to treatment. Front Physiol 2022; 13:1060812. [PMID: 36338488 PMCID: PMC9632287 DOI: 10.3389/fphys.2022.1060812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 10/04/2022] [Indexed: 11/17/2022] Open
Affiliation(s)
- Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
- *Correspondence: Kusum K. Kharbanda,
| | - Ashwani K. Singal
- Sanford School of Medicine, University of South Dakota, Vermillion, SD, United States
| | - Sebastian Mueller
- Center for Alcohol Research, University of Heidelberg, Heidelberg, Germany
| | - Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| |
Collapse
|
13
|
Arumugam MK, Chava S, Perumal SK, Paal MC, Rasineni K, Ganesan M, Donohue TM, Osna NA, Kharbanda KK. Acute ethanol-induced liver injury is prevented by betaine administration. Front Physiol 2022; 13:940148. [PMID: 36267591 PMCID: PMC9577233 DOI: 10.3389/fphys.2022.940148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 08/10/2022] [Indexed: 11/13/2022] Open
Abstract
Binge drinking is the most common form of excessive alcohol use. Repeated episodes of binge drinking cause multiple organ injuries, including liver damage. We previously demonstrated that chronic ethanol administration causes a decline in the intrahepatic ratio of S-adenosylmethionine (SAM) to S-adenosylhomocysteine (SAH). This decline causes impairments in essential methylation reactions that result in alcohol-induced fatty liver (steatosis) and other features of alcohol-associated liver disease (ALD). Co-treatment with betaine during chronic ethanol feeding, normalizes hepatocellular SAM:SAH ratio and alleviates many features of liver damage including steatosis. Here, we sought to examine whether betaine treatment similarly protects against liver injury in an alcohol binge-drinking model. We hypothesized that ethanol binge with prior or simultaneous betaine administration would prevent or attenuate acute alcohol-induced liver damage. Male C57Bl/6 mice were gavaged twice, 12 h apart, with either 6 g ethanol/kg BW or with an equal volume/kg BW of 0.9% NaCl. Two separate groups of mice (n = 5/group) were gavaged with 4 g betaine/kg BW, either 2 h before or simultaneously with the ethanol or saline gavages. All mice were sacrificed 8 h after the last gavage and serum and liver parameters were quantified. Ethanol binges caused a 50% decrease in hepatic SAM:SAH ratio and a >3-fold rise in liver triglycerides (p ≤ 0.05). These latter changes were accompanied by elevated serum AST and ALT activities and blood alcohol concentrations (BAC) that were ∼three-times higher than the legal limit of intoxication in humans. Mice that were treated with betaine 2 h before or simultaneously with the ethanol binges exhibited similar BAC as in mice given ethanol-alone. Both betaine treatments significantly elevated hepatic SAM levels thereby normalizing the SAM:SAH ratio and attenuating hepatic steatosis and other injury parameters, compared with mice given ethanol alone. Simultaneous betaine co-administration with ethanol was more effective in preventing or attenuating liver injury than betaine given before ethanol gavage. Our findings confirm the potential therapeutic value of betaine administration in preventing liver injury after binge drinking in an animal model.
Collapse
Affiliation(s)
- Madan Kumar Arumugam
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Srinivas Chava
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Sathish Kumar Perumal
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Matthew C. Paal
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Karuna Rasineni
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Terrence M. Donohue
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| |
Collapse
|
14
|
Bhatia R, Thompson CM, Clement EJ, Ganguly K, Cox JL, Rauth S, Siddiqui JA, Mashiana SS, Jain M, Wyatt TA, Mashiana HS, Singh S, Woods NT, Kharbanda KK, Batra SK, Kumar S. Malondialdehyde-Acetaldehyde Extracellular Matrix Protein Adducts Attenuate Unfolded Protein Response During Alcohol and Smoking-Induced Pancreatitis. Gastroenterology 2022; 163:1064-1078.e10. [PMID: 35788346 PMCID: PMC9796922 DOI: 10.1053/j.gastro.2022.06.071] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/20/2022] [Accepted: 06/27/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND & AIMS Epidemiological studies have established alcohol and smoking as independent risk factors for recurrent acute pancreatitis and chronic pancreatitis. However, the molecular players responsible for the progressive loss of pancreatic parenchyma and fibroinflammatory response are poorly characterized. METHODS Tandem mass tag-based proteomic and bioinformatics analyses were performed on the pancreata of mice exposed to alcohol, cigarette smoke, or a combination of alcohol and cigarette smoke. Biochemical, immunohistochemistry, and transcriptome analyses were performed on the pancreatic tissues and primary acinar cells treated with cerulein in combination with ethanol (50 mmol/L) and cigarette smoke extract (40 μg/mL) for the mechanistic studies. RESULTS A unique alteration in the pancreatic proteome was observed in mice exposed chronically to the combination of alcohol and cigarette smoke (56.5%) compared with cigarette smoke (21%) or alcohol (17%) alone. The formation of toxic metabolites (P < .001) and attenuated unfolded protein response (P < .04) were the significantly altered pathways on combined exposure. The extracellular matrix (ECM) proteins showed stable malondialdehyde-acetaldehyde (MAA) adducts in the pancreata of the combination group and chronic pancreatitis patients with a history of smoking and alcohol consumption. Interestingly, MAA-ECM adducts significantly suppressed expression of X-box-binding protein-1, leading to acinar cell death in the presence of alcohol and smoking. The stable MAA-ECM adducts persist even after alcohol and smoking cessation, and significantly delay pancreatic regeneration by abrogating the expression of cyclin-dependent kinases (CDK7 and CDK5) and regeneration markers. CONCLUSIONS The combined alcohol and smoking generate stable MAA-ECM adducts that increase endoplasmic reticulum stress and acinar cell death due to attenuated unfolded protein response and suppress expression of cell cycle regulators. Targeting aldehyde adducts might provide a novel therapeutic strategy for the management of recurrent acute pancreatitis and chronic pancreatitis.
Collapse
Affiliation(s)
- Rakesh Bhatia
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Christopher M Thompson
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Emalie J Clement
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska
| | - Koelina Ganguly
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Jesse L Cox
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Sanchita Rauth
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Jawed Akhtar Siddiqui
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Simran S Mashiana
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Maneesh Jain
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska; Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, Nebraska
| | - Todd A Wyatt
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska; Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska; Department of Environmental, Agricultural and Occupational Health, University of Nebraska Medical Center, Omaha, Nebraska
| | - Harmeet S Mashiana
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Shailender Singh
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Nicholas T Woods
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska
| | - Kusum K Kharbanda
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska; Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska; Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska; Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, Nebraska.
| | - Sushil Kumar
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska; Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, Nebraska.
| |
Collapse
|
15
|
New-Aaron M, Dagur RS, Koganti SS, Ganesan M, Wang W, Makarov E, Ogunnaike M, Kharbanda KK, Poluektova LY, Osna NA. Alcohol and HIV-Derived Hepatocyte Apoptotic Bodies Induce Hepatic Stellate Cell Activation. Biology (Basel) 2022; 11:1059. [PMID: 36101437 PMCID: PMC9312505 DOI: 10.3390/biology11071059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/07/2022] [Accepted: 07/12/2022] [Indexed: 11/16/2022]
Abstract
Recently, we found that both HIV and acetaldehyde, an alcohol metabolite, induce hepatocyte apoptosis, resulting in the release of large extracellular vesicles called apoptotic bodies (ABs). The engulfment of these hepatocyte ABs by hepatic stellate cells (HSC) leads to their profibrotic activation. This study aims to establish the mechanisms of HSC activation after engulfment of ABs from acetaldehyde and HIV-exposed hepatocytes (ABAGS+HIV). In vitro experiments were performed on Huh7.5-CYP (RLW) cells to generate hepatocyte ABs and LX2 cells were used as HSC. To generate ABs, RLW cells were pretreated for 24 h with acetaldehyde, then exposed overnight to HIV1ADA and to acetaldehyde for 96 h. Thereafter, ABs were isolated from cell suspension by a differential centrifugation method and incubated with LX2 cells (3:1 ratio) for profibrotic genes and protein analyses. We found that HSC internalized ABs via the tyrosine kinase receptor, Axl. While the HIV gag RNA/HIV proteins accumulated in ABs elicited no productive infection in LX2 and immune cells, they triggered ROS and IL6 generation, which, in turn, activated profibrotic genes via the JNK-ERK1/2 and JAK-STAT3 pathways. Similarly, ongoing profibrotic activation was observed in immunodeficient NSG mice fed ethanol and injected with HIV-derived RLW ABs. We conclude that HSC activation by hepatocyte ABAGS+HIV engulfment is mediated by ROS-dependent JNK-ERK1/2 and IL6 triggering of JAK-STAT3 pathways. This can partially explain the mechanisms of liver fibrosis development frequently observed among alcohol abusing PLWH.
Collapse
Affiliation(s)
- Moses New-Aaron
- Department of Environmental Health, Occupational Health and Toxicology, College of Public Health, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (R.S.D.); (S.S.K.); (M.G.); (M.O.); (K.K.K.)
| | - Raghubendra Singh Dagur
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (R.S.D.); (S.S.K.); (M.G.); (M.O.); (K.K.K.)
| | - Siva Sankar Koganti
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (R.S.D.); (S.S.K.); (M.G.); (M.O.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (R.S.D.); (S.S.K.); (M.G.); (M.O.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Weimin Wang
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68105, USA; (W.W.); (E.M.); (L.Y.P.)
| | - Edward Makarov
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68105, USA; (W.W.); (E.M.); (L.Y.P.)
| | - Mojisola Ogunnaike
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (R.S.D.); (S.S.K.); (M.G.); (M.O.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (R.S.D.); (S.S.K.); (M.G.); (M.O.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Larisa Y. Poluektova
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68105, USA; (W.W.); (E.M.); (L.Y.P.)
| | - Natalia A. Osna
- Department of Environmental Health, Occupational Health and Toxicology, College of Public Health, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (R.S.D.); (S.S.K.); (M.G.); (M.O.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68105, USA; (W.W.); (E.M.); (L.Y.P.)
| |
Collapse
|
16
|
Neuman MG, Seitz HK, Tuma PL, Osna NA, Casey CA, Kharbanda KK, Cohen LB, Malnick SDH, Adhikari R, Mitra R, Dagur RS, Ganesan M, Srinivas C, Madan Kumar A, New-Aaron M, Poluektova L, Thomes PG, Rasineni K, Opris M, Teschke R. Alcohol: basic and translational research; 15th annual Charles Lieber &1st Samuel French satellite symposium. Exp Mol Pathol 2022; 126:104750. [PMID: 35192844 PMCID: PMC9167794 DOI: 10.1016/j.yexmp.2022.104750] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 12/28/2021] [Accepted: 01/24/2022] [Indexed: 02/05/2023]
Abstract
The present review is based on the research presented at the symposium dedicated to the legacy of the two scientists that made important discoveries in the field of alcohol-induced liver damage: Professors C.S. Lieber and S.W. French. The invited speakers described pharmacological, toxicological and patho-physiological effects of alcohol misuse. Moreover, genetic biomarkers determining adverse drug reactions due to interactions between therapeutics used for chronic or infectious diseases and alcohol exposure were discussed. The researchers presented their work in areas of alcohol-induced impairment in lipid protein trafficking and endocytosis, as well as the role of lipids in the development of fatty liver. The researchers showed that alcohol leads to covalent modifications that promote hepatic dysfunction and injury. We concluded that using new advanced techniques and research ideas leads to important discoveries in science.
Collapse
Affiliation(s)
- Manuela G Neuman
- In Vitro Drug Safety and Biotechnology, Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada.
| | - Helmut K Seitz
- Centre of Liver and Alcohol Diseases, Ethianum Clinic, University of Heidelberg, Germany
| | - Pamela L Tuma
- The Catholic University of America, Department of Biology, Washington, DC 20064, USA
| | - Natalia A Osna
- VA-Nebraska-Western Iowa Health Care System, Department of Veterans' Affairs, Omaha, NE, and Department of Internal Medicine, Section of Gastroenterology-Hepatology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Carol A Casey
- VA-Nebraska-Western Iowa Health Care System, Department of Veterans' Affairs, Omaha, NE, and Department of Internal Medicine, Section of Gastroenterology-Hepatology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Kusum K Kharbanda
- VA-Nebraska-Western Iowa Health Care System, Department of Veterans' Affairs, Omaha, NE, and Department of Internal Medicine, Section of Gastroenterology-Hepatology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Lawrence B Cohen
- Division of Gastroenterology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada
| | - Steve D H Malnick
- Department of Internal Medicine C, Kaplan Medical Center, Affiliated Hebrew University, Jerusalem, Israel
| | - Raghabendra Adhikari
- The Catholic University of America, Department of Biology, Washington, DC 20064, USA
| | - Ramyajit Mitra
- The Catholic University of America, Department of Biology, Washington, DC 20064, USA
| | - Raghubendra Singh Dagur
- VA-Nebraska-Western Iowa Health Care System, Department of Veterans' Affairs, Omaha, NE, and Department of Internal Medicine, Section of Gastroenterology-Hepatology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Murali Ganesan
- VA-Nebraska-Western Iowa Health Care System, Department of Veterans' Affairs, Omaha, NE, and Department of Internal Medicine, Section of Gastroenterology-Hepatology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Chava Srinivas
- VA-Nebraska-Western Iowa Health Care System, Department of Veterans' Affairs, Omaha, NE, and Department of Internal Medicine, Section of Gastroenterology-Hepatology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Arumugam Madan Kumar
- VA-Nebraska-Western Iowa Health Care System, Department of Veterans' Affairs, Omaha, NE, and Department of Internal Medicine, Section of Gastroenterology-Hepatology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Moses New-Aaron
- VA-Nebraska-Western Iowa Health Care System, Department of Veterans' Affairs, Omaha, NE, and Department of Internal Medicine, Section of Gastroenterology-Hepatology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Larisa Poluektova
- VA-Nebraska-Western Iowa Health Care System, Department of Veterans' Affairs, Omaha, NE, and Department of Internal Medicine, Section of Gastroenterology-Hepatology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Paul G Thomes
- VA-Nebraska-Western Iowa Health Care System, Department of Veterans' Affairs, Omaha, NE, and Department of Internal Medicine, Section of Gastroenterology-Hepatology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Karuna Rasineni
- VA-Nebraska-Western Iowa Health Care System, Department of Veterans' Affairs, Omaha, NE, and Department of Internal Medicine, Section of Gastroenterology-Hepatology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Mihai Opris
- In Vitro Drug Safety and Biotechnology, Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada; Family Medicine Clinic CAR, Bucharest, Romania
| | - Rolf Teschke
- Department of Internal Medicine II, Division of Gastroenterology and Hepatology, Klinikum Hanau, Hanau, Academic Teaching Hospital of the Medical Faculty, Goethe University Frankfurt/ Main, Frankfurt/Main, Germany
| |
Collapse
|
17
|
Nissen CG, Mosley DD, Kharbanda KK, Katafiasz DM, Bailey KL, Wyatt TA. Malondialdehyde Acetaldehyde-Adduction Changes Surfactant Protein D Structure and Function. Front Immunol 2022; 13:866795. [PMID: 35669781 PMCID: PMC9164268 DOI: 10.3389/fimmu.2022.866795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 04/13/2022] [Indexed: 11/23/2022] Open
Abstract
Alcohol consumption with concurrent cigarette smoking produces malondialdehyde acetaldehyde (MAA)-adducted lung proteins. Lung surfactant protein D (SPD) supports innate immunity via bacterial aggregation and lysis, as well as by enhancing macrophage-binding and phagocytosis. MAA-adducted SPD (SPD-MAA) has negative effects on lung cilia beating, macrophage function, and epithelial cell injury repair. Because changes in SPD multimer structure are known to impact SPD function, we hypothesized that MAA-adduction changes both SPD structure and function. Purified human SPD and SPD-MAA (1 mg/mL) were resolved by gel filtration using Sephadex G-200 and protein concentration of each fraction determined by Bradford assay. Fractions were immobilized onto nitrocellulose by slot blot and assayed by Western blot using antibodies to SPD and to MAA. Binding of SPD and SPD-MAA was determined fluorometrically using GFP-labeled Streptococcus pneumoniae (GFP-SP). Anti-bacterial aggregation of GFP-SP and macrophage bacterial phagocytosis were assayed by microscopy and permeability determined by bacterial phosphatase release. Viral injury was measured as LDH release in RSV-treated airway epithelial cells. Three sizes of SPD were resolved by gel chromatography as monomeric, trimeric, and multimeric forms. SPD multimer was the most prevalent, while the majority of SPD-MAA eluted as trimer and monomer. SPD dose-dependently bound to GFP-SP, but SPD-MAA binding to bacteria was significantly reduced. SPD enhanced, but MAA adduction of SPD prevented, both aggregation and macrophage phagocytosis of GFP-SP. Likewise, SPD increased bacterial permeability while SPD-MAA did not. In the presence of RSV, BEAS-2B cell viability was enhanced by SPD, but not protected by SPD-MAA. Our results demonstrate that MAA adduction changes the quaternary structure of SPD from multimer to trimer and monomer leading to a decrease in the native anti-microbial function of SPD. These findings suggest one mechanism for increased pneumonia observed in alcohol use disorders.
Collapse
Affiliation(s)
- Claire G. Nissen
- Department of Environmental, Agricultural and Occupational Health, College of Public Health, University of Nebraska Medical Center, Omaha, NE, United States
| | - Deanna D. Mosley
- Department of Internal Medicine, College of Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Kusum K. Kharbanda
- Department of Internal Medicine, College of Medicine, University of Nebraska Medical Center, Omaha, NE, United States
- Research Service Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
| | - Dawn M. Katafiasz
- Department of Internal Medicine, College of Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Kristina L. Bailey
- Department of Internal Medicine, College of Medicine, University of Nebraska Medical Center, Omaha, NE, United States
- Research Service Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
| | - Todd A. Wyatt
- Department of Environmental, Agricultural and Occupational Health, College of Public Health, University of Nebraska Medical Center, Omaha, NE, United States
- Department of Internal Medicine, College of Medicine, University of Nebraska Medical Center, Omaha, NE, United States
- Research Service Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
| |
Collapse
|
18
|
Osna NA, New-Aaron M, Dagur RS, Thomes P, Simon L, Levitt D, McTernan P, Molina PE, Choi HY, Machida K, Sherman KE, Riva A, Phillips S, Chokshi S, Kharbanda KK, Weinman S, Ganesan M. A review of alcohol-pathogen interactions: New insights into combined disease pathomechanisms. Alcohol Clin Exp Res 2022; 46:359-370. [PMID: 35076108 PMCID: PMC8920772 DOI: 10.1111/acer.14777] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/12/2022] [Accepted: 01/14/2022] [Indexed: 02/05/2023]
Abstract
Progression of chronic infections to end-stage diseases and poor treatment results are frequently associated with alcohol abuse. Alcohol metabolism suppresses innate and adaptive immunity leading to increased viral load and its spread. In case of hepatotropic infections, viruses accelerate alcohol-induced hepatitis and liver fibrosis, thereby promoting end-stage outcomes, including cirrhosis and hepatocellular carcinoma (HCC). In this review, we concentrate on several unexplored aspects of these phenomena, which illustrate the combined effects of viral/bacterial infections and alcohol in disease development. We review alcohol-induced alterations implicated in immunometabolism as a central mechanism impacting metabolic homeostasis and viral pathogenesis in Simian immunodeficiency virus/human immunodeficiency virus infection. Furthermore, in hepatocytes, both HIV infection and alcohol activate oxidative stress to cause lysosomal dysfunction and leakage and apoptotic cell death, thereby increasing hepatotoxicity. In addition, we discuss the mechanisms of hepatocellular carcinoma and tumor signaling in hepatitis C virus infection. Finally, we analyze studies that review and describe the immune derangements in hepatotropic viral infections focusing on the development of novel targets and strategies to restore effective immunocompetency in alcohol-associated liver disease. In conclusion, alcohol exacerbates the pathogenesis of viral infections, contributing to a chronic course and poor outcomes, but the mechanisms behind these events are virus specific and depend on virus-alcohol interactions, which differ among the various infections.
Collapse
Affiliation(s)
- Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Moses New-Aaron
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
- Department of Environmental Health, Occupational Health, and Toxicology, College of Public Health, Department of Environmental Health, Occupational Health, and Toxicology, College of Public Health, University of Nebraska Medical Center, Omaha, NE, USA
| | - Raghubendra S. Dagur
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Paul Thomes
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Liz Simon
- Department of Physiology & Comprehensive Alcohol-HIV/AIDS Research Center, LSU Health Sciences Center, New Orleans, LA 70112, USA
| | - Danielle Levitt
- Department of Physiology & Comprehensive Alcohol-HIV/AIDS Research Center, LSU Health Sciences Center, New Orleans, LA 70112, USA
| | - Patrick McTernan
- Department of Physiology & Comprehensive Alcohol-HIV/AIDS Research Center, LSU Health Sciences Center, New Orleans, LA 70112, USA
| | - Patricia E. Molina
- Department of Physiology & Comprehensive Alcohol-HIV/AIDS Research Center, LSU Health Sciences Center, New Orleans, LA 70112, USA
| | - Hye Yeon Choi
- Department of Molecular Microbiology and Immunology, University of Southern California Keck School of Medicine, Los Angeles, CA 90089-9020, USA
| | - Keigo Machida
- Department of Molecular Microbiology and Immunology, University of Southern California Keck School of Medicine, Los Angeles, CA 90089-9020, USA
- Southern California Research Center for ALPD and Cirrhosis, Los Angeles, CA 90089-9141, USA
| | - Kenneth E. Sherman
- Department of Internal Medicine, Division of Digestive Disease, University of Cincinnati, College of Medicine, Cincinnati, OH 45267-0595, USA
| | - Antonio Riva
- The Roger Williams Institute of Hepatology, Foundation for Liver Research, London, UK
| | - Sandra Phillips
- The Roger Williams Institute of Hepatology, Foundation for Liver Research, London, UK
| | - Shilpa Chokshi
- The Roger Williams Institute of Hepatology, Foundation for Liver Research, London, UK
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Steven Weinman
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| |
Collapse
|
19
|
Osna NA, Eguchi A, Feldstein AE, Tsukamoto H, Dagur RS, Ganesan M, New-Aaron M, Arumugam MK, Chava S, Ribeiro M, Szabo G, Mueller S, Wang S, Chen C, Weinman SA, Kharbanda KK. Cell-to-Cell Communications in Alcohol-Associated Liver Disease. Front Physiol 2022; 13:831004. [PMID: 35264978 PMCID: PMC8899290 DOI: 10.3389/fphys.2022.831004] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 01/26/2022] [Indexed: 02/05/2023] Open
Abstract
This review covers some important new aspects of the alcohol-induced communications between liver parenchymal and non-parenchymal cells leading to liver injury development. The information exchange between various cell types may promote end-stage liver disease progression and involves multiple mechanisms, such as direct cell-to-cell interactions, extracellular vesicles (EVs) or chemokines, cytokines, and growth factors contained in extracellular fluids/cell culture supernatants. Here, we highlighted the role of EVs derived from alcohol-exposed hepatocytes (HCs) in activation of non-parenchymal cells, liver macrophages (LM), and hepatic stellate cells (HSC). The review also concentrates on EV-mediated crosstalk between liver parenchymal and non-parenchymal cells in the settings of HIV- and alcohol co-exposure. In addition, we overviewed the literature on the crosstalk between cell death pathways and inflammasome activation in alcohol-activated HCs and macrophages. Furthermore, we covered highly clinically relevant studies on the role of non-inflammatory factors, sinusoidal pressure (SP), and hepatic arterialization in alcohol-induced hepatic fibrogenesis. We strongly believe that the review will disclose major mechanisms of cell-to-cell communications pertained to alcohol-induced liver injury progression and will identify therapeutically important targets, which can be used for alcohol-associated liver disease (ALD) prevention.
Collapse
Affiliation(s)
- Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Akiko Eguchi
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Mie University, Tsu, Japan
| | - Ariel E. Feldstein
- Department of Pediatrics, University of California, San Diego, San Diego, CA, United States
| | - Hidekazu Tsukamoto
- Southern California Research Center for ALPD and Cirrhosis and Department of Pathology, Keck School of Medicine of the University of Southern California, Los Angeles, CA, United States
- Greater Los Angeles VA HealthCare System, Los Angeles, CA, United States
| | - Raghubendra S. Dagur
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Moses New-Aaron
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Environmental Health, Occupational Health, and Toxicology, College of Public Health, University of Nebraska Medical Center, Omaha, NE, United States
| | - Madan Kumar Arumugam
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Srinivas Chava
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Marcelle Ribeiro
- Harvard Medical School and Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA, United States
| | - Gyongyi Szabo
- Harvard Medical School and Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA, United States
| | - Sebastian Mueller
- Salem Medical Center and Center for Alcohol Research, University of Heidelberg, Heidelberg, Germany
| | - Shijin Wang
- Salem Medical Center and Center for Alcohol Research, University of Heidelberg, Heidelberg, Germany
| | - Cheng Chen
- Salem Medical Center and Center for Alcohol Research, University of Heidelberg, Heidelberg, Germany
| | - Steven A. Weinman
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS, United States
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| |
Collapse
|
20
|
Lonardo A, Singal AK, Osna N, Kharbanda KK. Effect of cofactors on NAFLD/NASH and MAFLD. A paradigm illustrating the pathomechanics of organ dysfunction. Metab Target Organ Damage 2022; 2. [PMID: 36090199 PMCID: PMC9453927 DOI: 10.20517/mtod.2022.14] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Primary nonalcoholic fatty liver disease (NAFLD) is bi-directionally associated with the metabolic syndrome and its constitutive features (“factors”: impaired glucose disposal, visceral obesity, arterial hypertension, and dyslipidemia). Secondary NAFLD occurs due to endocrinologic disturbances or other cofactors. This nosography tends to be outdated by the novel definition of metabolic associated fatty liver disease (MAFLD). Irrespective of nomenclature, this condition exhibits a remarkable pathogenic heterogeneity with unpredictable clinical outcomes which are heavily influenced by liver histology changes. Genetics and epigenetics, lifestyle habits [including diet and physical (in)activity] and immunity/infection appear to be major cofactors that modulate NAFLD/MAFLD outcomes, including organ dysfunction owing to liver cirrhosis and hepatocellular carcinoma, type 2 diabetes, chronic kidney disease, heart failure, and sarcopenia. The identification of cofactors for organ dysfunction that may help understand disease heterogeneity and reliably support inherently personalized medicine approaches is a research priority, thus paving the way for innovative treatment strategies.
Collapse
Affiliation(s)
- Amedeo Lonardo
- Department of Internal Medicine, Azienda Ospedaliero-Universitaria, Modena 41126, Italy
| | - Ashwani K. Singal
- Sanford School of Medicine, University of South Dakota, Vermillion, SD 57105, USA
| | - Natalia Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| |
Collapse
|
21
|
Ganesan M, Wang W, Mathews S, Makarov E, New-Aaron M, Dagur RS, Malo A, Protzer U, Kharbanda KK, Casey CA, Poluektova LY, Osna NA. Ethanol attenuates presentation of cytotoxic T-lymphocyte epitopes on hepatocytes of HBV-infected humanized mice. Alcohol Clin Exp Res 2022; 46:40-51. [PMID: 34773268 PMCID: PMC8799491 DOI: 10.1111/acer.14740] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 11/02/2021] [Accepted: 11/04/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND AND AIMS Approximately 3.5% of the global population is chronically infected with Hepatitis B Virus (HBV), which puts them at high risk of end-stage liver disease, with the risk of persistent infection potentiated by alcohol consumption. However, the mechanisms underlying the effects of alcohol on HBV persistence remain unclear. Here, we aimed to establish in vivo/ex vivo evidence that alcohol suppresses HBV peptides-major histocompatibility complex (MHC) class I antigen display on primary human hepatocytes (PHH), which diminishes the recognition and clearance of HBV-infected hepatocytes by cytotoxic T-lymphocytes (CTLs). METHODS We used fumarylacetoacetate hydrolase (Fah)-/-, Rag2-/-, common cytokine receptor gamma chain knock-out (FRG-KO) humanized mice transplanted with human leukocyte antigen-A2 (HLA-A2)-positive hepatocytes. The mice were HBV-infected and fed control and alcohol diets. Isolated hepatocytes were exposed ex vivo to HBV 18-27-HLA-A2-restricted CTLs to quantify cytotoxicity. For mechanistic studies, we measured proteasome activities, unfolded protein response (UPR), and endoplasmic reticulum (ER) stress in hepatocytes from HBV-infected humanized mouse livers. RESULTS AND CONCLUSIONS We found that alcohol feeding attenuated HBV core 18-27-HLA-A2 complex presentation on infected hepatocytes due to the suppression of proteasome function and ER stress induction, which diminished both the processing of HBV peptides and trafficking of HBV-MHC class I complexes to the hepatocyte surface. This alcohol-mediated decrease in MHC class I-restricted antigen presentation of the CTL epitope on target hepatocytes reduced the CTL-specific elimination of infected cells, potentially leading to HBV-infection persistence, which promotes end-stage liver disease outcomes.
Collapse
Affiliation(s)
- Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Weimin Wang
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Saumi Mathews
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Edward Makarov
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Moses New-Aaron
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Environmental Health, Occupational Health and Toxicology, University of Nebraska Medical Center, Omaha, NE, 68105, USA
| | - Raghubendra Singh Dagur
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Antje Malo
- Institute of Virology, Helmholtz Zentrum München, Munich, Germany
| | - Ulrike Protzer
- Institute of Virology, Helmholtz Zentrum München, Munich, Germany
- German Centre for Infection Research (DZIF), Munich, Hamburg, and Heidelberg partner sites, Germany
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Carol A Casey
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Larisa Y. Poluektova
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
| |
Collapse
|
22
|
Wyatt TA, Warren KJ, Wetzel TJ, Suwondo T, Rensch GP, DeVasure JM, Mosley DD, Kharbanda KK, Thiele GM, Burnham EL, Bailey KL, Yeligar SM. Malondialdehyde-Acetaldehyde Adduct Formation Decreases Immunoglobulin A Transport across Airway Epithelium in Smokers Who Abuse Alcohol. Am J Pathol 2021; 191:1732-1742. [PMID: 34186073 PMCID: PMC8485061 DOI: 10.1016/j.ajpath.2021.06.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 06/09/2021] [Accepted: 06/16/2021] [Indexed: 12/16/2022]
Abstract
Alcohol misuse and smoking are risk factors for pneumonia, yet the impact of combined cigarette smoke and alcohol on pneumonia remains understudied. Smokers who misuse alcohol form lung malondialdehyde-acetaldehyde (MAA) protein adducts and have decreased levels of anti-MAA secretory IgA (sIgA). Transforming growth factor-β (TGF-β) down-regulates polymeric Ig receptor (pIgR) on mucosal epithelium, resulting in decreased sIgA transcytosis to the mucosa. It is hypothesized that MAA-adducted lung protein increases TGF-β, preventing expression of epithelial cell pIgR and decreasing sIgA. Cigarette smoke and alcohol co-exposure on sIgA and TGF-β in human bronchoalveolar lavage fluid and in mice instilled with MAA-adducted surfactant protein D (SPD-MAA) were studied herein. Human bronchial epithelial cells (HBECs) and mouse tracheal epithelial cells were treated with SPD-MAA and sIgA and TGF-β was measured. Decreased sIgA and increased TGF-β were observed in bronchoalveolar lavage from combined alcohol and smoking groups in humans and mice. CD204 (MAA receptor) knockout mice showed no changes in sIgA. SPD-MAA decreased pIgR in HBECs. Conversely, SPD-MAA stimulated TGF-β release in both HBECs and mouse tracheal epithelial cells, but not in CD204 knockout mice. SPD-MAA stimulated TGF-β in alveolar macrophage cells. These data show that MAA-adducted surfactant protein stimulates lung epithelial cell TGF-β, down-regulates pIgR, and decreases sIgA transcytosis. These data provide a mechanism for the decreased levels of sIgA observed in smokers who misuse alcohol.
Collapse
Affiliation(s)
- Todd A Wyatt
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska; Department of Environmental, Agricultural and Occupational Health, University of Nebraska Medical Center, Omaha, Nebraska; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska.
| | - Kristi J Warren
- Department of Medicine-Pulmonary Division, University of Utah/VA Salt Lake Health Care System, Salt Lake City, Utah
| | - Tanner J Wetzel
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Troy Suwondo
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Gage P Rensch
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Jane M DeVasure
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Deanna D Mosley
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Kusum K Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Geoffrey M Thiele
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Ellen L Burnham
- Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado School of Medicine, Denver, Colorado
| | - Kristina L Bailey
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Samantha M Yeligar
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, Emory University, Atlanta, Georgia; Research Service, Atlanta VA Health Care System, Decatur, Georgia
| |
Collapse
|
23
|
Arumugam MK, Chava S, Rasineni K, Paal MC, Donohue TM, Osna NA, Kharbanda KK. Elevated S-adenosylhomocysteine induces adipocyte dysfunction to promote alcohol-associated liver steatosis. Sci Rep 2021; 11:14693. [PMID: 34282217 PMCID: PMC8289835 DOI: 10.1038/s41598-021-94180-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 06/28/2021] [Indexed: 02/08/2023] Open
Abstract
It has been previously shown that chronic ethanol administration-induced increase in adipose tissue lipolysis and reduction in the secretion of protective adipokines collectively contribute to alcohol-associated liver disease (ALD) pathogenesis. Further studies have revealed that increased adipose S-adenosylhomocysteine (SAH) levels generate methylation defects that promote lipolysis. Here, we hypothesized that increased intracellular SAH alone causes additional related pathological changes in adipose tissue as seen with alcohol administration. To test this, we used 3-deazaadenosine (DZA), which selectively elevates intracellular SAH levels by blocking its hydrolysis. Fully differentiated 3T3-L1 adipocytes were treated in vitro for 48 h with DZA and analysed for lipolysis, adipokine release and differentiation status. DZA treatment enhanced adipocyte lipolysis, as judged by lower levels of intracellular triglycerides, reduced lipid droplet sizes and higher levels of glycerol and free fatty acids released into the culture medium. These findings coincided with activation of both adipose triglyceride lipase and hormone sensitive lipase. DZA treatment also significantly reduced adipocyte differentiation factors, impaired adiponectin and leptin secretion but increased release of pro-inflammatory cytokines, IL-6, TNF and MCP-1. Together, our results demonstrate that elevation of intracellular SAH alone by DZA treatment of 3T3-L1 adipocytes induces lipolysis and dysregulates adipokine secretion. Selective elevation of intracellular SAH by DZA treatment mimics ethanol's effects and induces adipose dysfunction. We conclude that alcohol-induced elevations in adipose SAH levels contribute to the pathogenesis and progression of ALD.
Collapse
Affiliation(s)
- Madan Kumar Arumugam
- Research Service (151), Veterans Affairs Nebraska-Western Iowa Health Care System, 4101 Woolworth Avenue, Omaha, NE, 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Srinivas Chava
- Research Service (151), Veterans Affairs Nebraska-Western Iowa Health Care System, 4101 Woolworth Avenue, Omaha, NE, 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Karuna Rasineni
- Research Service (151), Veterans Affairs Nebraska-Western Iowa Health Care System, 4101 Woolworth Avenue, Omaha, NE, 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Matthew C Paal
- Research Service (151), Veterans Affairs Nebraska-Western Iowa Health Care System, 4101 Woolworth Avenue, Omaha, NE, 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Terrence M Donohue
- Research Service (151), Veterans Affairs Nebraska-Western Iowa Health Care System, 4101 Woolworth Avenue, Omaha, NE, 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Natalia A Osna
- Research Service (151), Veterans Affairs Nebraska-Western Iowa Health Care System, 4101 Woolworth Avenue, Omaha, NE, 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Kusum K Kharbanda
- Research Service (151), Veterans Affairs Nebraska-Western Iowa Health Care System, 4101 Woolworth Avenue, Omaha, NE, 68105, USA.
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
| |
Collapse
|
24
|
Arumugam MK, Paal MC, Donohue TM, Ganesan M, Osna NA, Kharbanda KK. Beneficial Effects of Betaine: A Comprehensive Review. Biology (Basel) 2021; 10:biology10060456. [PMID: 34067313 PMCID: PMC8224793 DOI: 10.3390/biology10060456] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/06/2021] [Accepted: 05/19/2021] [Indexed: 02/05/2023]
Abstract
Medicinal herbs and many food ingredients possess favorable biological properties that contribute to their therapeutic activities. One such natural product is betaine, a stable, nontoxic natural substance that is present in animals, plants, and microorganisms. Betaine is also endogenously synthesized through the metabolism of choline or exogenously consumed through dietary intake. Betaine mainly functions as (i) an osmolyte and (ii) a methyl-group donor. This review describes the major physiological effects of betaine in whole-body health and its ability to protect against both liver- as well as non-liver-related diseases and conditions. Betaine's role in preventing/attenuating both alcohol-induced and metabolic-associated liver diseases has been well studied and is extensively reviewed here. Several studies show that betaine protects against the development of alcohol-induced hepatic steatosis, apoptosis, and accumulation of damaged proteins. Additionally, it can significantly prevent/attenuate progressive liver injury by preserving gut integrity and adipose function. The protective effects are primarily associated with the regulation of methionine metabolism through removing homocysteine and maintaining cellular SAM:SAH ratios. Similarly, betaine prevents metabolic-associated fatty liver disease and its progression. In addition, betaine has a neuroprotective role, preserves myocardial function, and prevents pancreatic steatosis. Betaine also attenuates oxidant stress, endoplasmic reticulum stress, inflammation, and cancer development. To conclude, betaine exerts significant therapeutic and biological effects that are potentially beneficial for alleviating a diverse number of human diseases and conditions.
Collapse
Affiliation(s)
- Madan Kumar Arumugam
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (MK.A.); (M.C.P.); (T.M.D.J.); (M.G.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Matthew C. Paal
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (MK.A.); (M.C.P.); (T.M.D.J.); (M.G.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Terrence M. Donohue
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (MK.A.); (M.C.P.); (T.M.D.J.); (M.G.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (MK.A.); (M.C.P.); (T.M.D.J.); (M.G.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (MK.A.); (M.C.P.); (T.M.D.J.); (M.G.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (MK.A.); (M.C.P.); (T.M.D.J.); (M.G.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Correspondence: ; Tel.: +1-402-995-3752; Fax: +1-402-995-4600
| |
Collapse
|
25
|
Thomes PG, Rasineni K, Saraswathi V, Kharbanda KK, Clemens DL, Sweeney SA, Kubik JL, Donohue TM, Casey CA. Natural Recovery by the Liver and Other Organs after Chronic Alcohol Use. Alcohol Res 2021; 41:05. [PMID: 33868869 PMCID: PMC8041137 DOI: 10.35946/arcr.v41.1.05] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Chronic, heavy alcohol consumption disrupts normal organ function and causes structural damage in virtually every tissue of the body. Current diagnostic terminology states that a person who drinks alcohol excessively has alcohol use disorder. The liver is especially susceptible to alcohol-induced damage. This review summarizes and describes the effects of chronic alcohol use not only on the liver, but also on other selected organs and systems affected by continual heavy drinking—including the gastrointestinal tract, pancreas, heart, and bone. Most significantly, the recovery process after cessation of alcohol consumption (abstinence) is explored. Depending on the organ and whether there is relapse, functional recovery is possible. Even after years of heavy alcohol use, the liver has a remarkable regenerative capacity and, following alcohol removal, can recover a significant portion of its original mass and function. Other organs show recovery after abstinence as well. Data on studies of both heavy alcohol use among humans and animal models of chronic ethanol feeding are discussed. This review describes how (or whether) each organ/tissue metabolizes ethanol, as metabolism influences the organ’s degree of injury. Damage sustained by the organ/tissue is reviewed, and evidence for recovery during abstinence is presented.
Collapse
Affiliation(s)
- Paul G Thomes
- Department of Internal Medicine, Section of Gastroenterology, University of Nebraska Medical Center, Omaha, Nebraska.,Research Service, U.S. Department of Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Karuna Rasineni
- Department of Internal Medicine, Section of Gastroenterology, University of Nebraska Medical Center, Omaha, Nebraska.,Research Service, U.S. Department of Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Viswanathan Saraswathi
- Research Service, U.S. Department of Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska.,Department of Internal Medicine, Section of Diabetes, Endocrinology, and Metabolism, University of Nebraska Medical Center, Omaha, Nebraska
| | - Kusum K Kharbanda
- Department of Internal Medicine, Section of Gastroenterology, University of Nebraska Medical Center, Omaha, Nebraska.,Research Service, U.S. Department of Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Dahn L Clemens
- Department of Internal Medicine, Section of Cardiovascular Medicine, University of Nebraska Medical Center, Omaha, Nebraska.,Fred & Pamela Buffet Cancer Center, University of Nebraska Medical Center, Omaha, Nebraska
| | - Sarah A Sweeney
- Department of Internal Medicine, Section of Gastroenterology, University of Nebraska Medical Center, Omaha, Nebraska.,Research Service, U.S. Department of Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Jacy L Kubik
- Department of Internal Medicine, Section of Gastroenterology, University of Nebraska Medical Center, Omaha, Nebraska.,Research Service, U.S. Department of Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Terrence M Donohue
- Department of Internal Medicine, Section of Gastroenterology, University of Nebraska Medical Center, Omaha, Nebraska.,Research Service, U.S. Department of Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Carol A Casey
- Department of Internal Medicine, Section of Gastroenterology, University of Nebraska Medical Center, Omaha, Nebraska.,Research Service, U.S. Department of Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| |
Collapse
|
26
|
Rasineni K, Jordan CW, Thomes PG, Kubik JL, Staab EM, Sweeney SA, Talmon GA, Donohue TM, McNiven MA, Kharbanda KK, Casey CA. Contrasting Effects of Fasting on Liver-Adipose Axis in Alcohol-Associated and Non-alcoholic Fatty Liver. Front Physiol 2021; 12:625352. [PMID: 33746771 PMCID: PMC7966527 DOI: 10.3389/fphys.2021.625352] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 02/02/2021] [Indexed: 01/15/2023] Open
Abstract
Background: Fatty liver, a major health problem worldwide, is the earliest pathological change in the progression of alcohol-associated (AFL) and non-alcoholic fatty liver disease (NAFL). Though the causes of AFL and NAFL differ, both share similar histological and some common pathophysiological characteristics. In this study, we sought to examine mechanisms responsible for lipid dynamics in liver and adipose tissue in the setting of AFL and NAFL in response to 48 h of fasting. Methods: Male rats were fed Lieber-DeCarli liquid control or alcohol-containing diet (AFL model), chow or high-fat pellet diet (NAFL model). After 6–8 weeks of feeding, half of the rats from each group were fasted for 48 h while the other half remained on their respective diets. Following sacrifice, blood, adipose, and the liver were collected for analysis. Results: Though rats fed AFL and NAFL diets both showed fatty liver, the physiological mechanisms involved in the development of each was different. Here, we show that increased hepatic de novo fatty acid synthesis, increased uptake of adipose-derived free fatty acids, and impaired triglyceride breakdown contribute to the development of AFL. In the case of NAFL, however, increased dietary fatty acid uptake is the major contributor to hepatic steatosis. Likewise, the response to starvation in the two fatty liver disease models also varied. While there was a decrease in hepatic steatosis after fasting in ethanol-fed rats, the control, chow and high-fat diet-fed rats showed higher levels of hepatic steatosis than pair-fed counterparts. This diverse response was a result of increased adipose lipolysis in all experimental groups except fasted ethanol-fed rats. Conclusion: Even though AFL and NAFL are nearly histologically indistinguishable, the physiological mechanisms that cause hepatic fat accumulation are different as are their responses to starvation.
Collapse
Affiliation(s)
- Karuna Rasineni
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States.,Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
| | - Clayton W Jordan
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Paul G Thomes
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States.,Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
| | - Jacy L Kubik
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States.,Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States
| | - Elizabeth M Staab
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Sarah A Sweeney
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Geoffrey A Talmon
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Terrence M Donohue
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States.,Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States.,Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Mark A McNiven
- Department of Biochemistry and Molecular Biology and the Center for Digestive Diseases, Mayo Clinic, Rochester, MN, United States
| | - Kusum K Kharbanda
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States.,Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States.,Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Carol A Casey
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States.,Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States.,Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| |
Collapse
|
27
|
New-Aaron M, Ganesan M, Dagur RS, Kharbanda KK, Poluektova LY, Osna NA. Pancreatogenic Diabetes: Triggering Effects of Alcohol and HIV. Biology (Basel) 2021; 10:108. [PMID: 33546230 PMCID: PMC7913335 DOI: 10.3390/biology10020108] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/29/2021] [Accepted: 01/29/2021] [Indexed: 02/07/2023]
Abstract
Multiorgan failure may not be completely resolved among people living with HIV despite HAART use. Although the chances of organ dysfunction may be relatively low, alcohol may potentiate HIV-induced toxic effects in the organs of alcohol-abusing, HIV-infected individuals. The pancreas is one of the most implicated organs, which is manifested as diabetes mellitus or pancreatic cancer. Both alcohol and HIV may trigger pancreatitis, but the combined effects have not been explored. The aim of this review is to explore the literature for understanding the mechanisms of HIV and alcohol-induced pancreatotoxicity. We found that while premature alcohol-inducing zymogen activation is a known trigger of alcoholic pancreatitis, HIV entry through C-C chemokine receptor type 5(CCR5)into pancreatic acinar cells may also contribute to pancreatitis in people living with HIV (PLWH). HIV proteins induce oxidative and ER stresses, causing necrosis. Furthermore, infiltrative immune cells induce necrosis on HIV-containing acinar cells. When necrotic products interact with pancreatic stellate cells, they become activated, leading to the release of both inflammatory and profibrotic cytokines and resulting in pancreatitis. Effective therapeutic strategies should block CCR5 and ameliorate alcohol's effects on acinar cells.
Collapse
Affiliation(s)
- Moses New-Aaron
- Department of Environmental Health, Occupational Health and Toxicology, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Veteran Affairs Nebraska—Western Iowa Health Care System, Omaha, NE 68105, USA; (M.G.); (R.S.D.); (K.K.K.)
| | - Murali Ganesan
- Veteran Affairs Nebraska—Western Iowa Health Care System, Omaha, NE 68105, USA; (M.G.); (R.S.D.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Raghubendra Singh Dagur
- Veteran Affairs Nebraska—Western Iowa Health Care System, Omaha, NE 68105, USA; (M.G.); (R.S.D.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Kusum K. Kharbanda
- Veteran Affairs Nebraska—Western Iowa Health Care System, Omaha, NE 68105, USA; (M.G.); (R.S.D.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Larisa Y. Poluektova
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| | - Natalia A. Osna
- Department of Environmental Health, Occupational Health and Toxicology, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Veteran Affairs Nebraska—Western Iowa Health Care System, Omaha, NE 68105, USA; (M.G.); (R.S.D.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| |
Collapse
|
28
|
Dagur RS, New-Aaron M, Ganesan M, Wang W, Romanova S, Kidambi S, Kharbanda KK, Poluektova LY, Osna NA. Alcohol-and-HIV-Induced Lysosomal Dysfunction Regulates Extracellular Vesicles Secretion in Vitro and in Liver-Humanized Mice. Biology (Basel) 2021; 10:biology10010029. [PMID: 33466299 PMCID: PMC7824801 DOI: 10.3390/biology10010029] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 12/30/2020] [Accepted: 12/31/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Alcohol abuse is common in people living with HIV-1 and dramaticallyenhances the severity of HIV-induced liver damage by inducing oxidative stress and lysosomaldysfunction in the liver cells. We hypothesize that the increased release of extracellular vesicles(EVs) in hepatocytes and liver humanized mouse model is linked to lysosome dysfunction. METHODS The study was performed on primary human hepatocytes and human hepatoma RLWXP-GFP (Huh7.5 cells stably transfected with CYP2E1 and XPack-GFP) cells and validated on ethanol-fed liverhumanizedfumarylacetoacetate hydrolase (Fah)-/-, Rag2-/-, common cytokine receptor gamma chainknockout (FRG-KO) mice. Cells and mice were infected with HIV-1ADA virus. RESULTS We observedan increase in the secretion of EVs associated with a decrease in lysosomal activity and expressionof lysosomal-associated membrane protein 1. Next-generation RNA sequencing of primary humanhepatocytes revealed 63 differentially expressed genes, with 13 downregulated and 50 upregulatedgenes in the alcohol-HIV-treated group. Upstream regulator analysis of differentially expressedgenes through Ingenuity Pathway Analysis identified transcriptional regulators affecting downstreamgenes associated with increased oxidative stress, lysosomal associated disease, and function andEVs biogenesis. Our in vitro findings were corroborated by in vivo studies on human hepatocytetransplantedhumanized mice, indicating that intensive EVs' generation by human hepatocytes andtheir secretion to serum was associated with increased oxidative stress and reduction in lysosomalactivities triggered by HIV infection and ethanol diet. CONCLUSION HIV-and-ethanol-metabolisminducedEVs release is tightly controlled by lysosome status in hepatocytes and participates in thedevelopment of double-insult-induced liver injury.
Collapse
Affiliation(s)
- Raghubendra Singh Dagur
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.N.-A.); (M.G.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Correspondence: (R.S.D.); (N.A.O.); Tel.: +1-402-995-4751 (R.S.D.); +1-402-995-3735 (N.A.O.); Fax: +1-402-449-0604 (R.S.D. & N.A.O.)
| | - Moses New-Aaron
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.N.-A.); (M.G.); (K.K.K.)
- Department of Environmental, Agriculture and Occupational Health, College of Public Health, University of Nebraska Medical Center, Omaha, NE 68102, USA
| | - Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.N.-A.); (M.G.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Weimin Wang
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198, USA; (W.W.); (L.Y.P.)
| | - Svetlana Romanova
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| | - Srivatsan Kidambi
- Department of Chemical and Biomolecular Engineering, University of Nebraska, Lincoln, NE 68588, USA;
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.N.-A.); (M.G.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Larisa Y. Poluektova
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198, USA; (W.W.); (L.Y.P.)
| | - Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.N.-A.); (M.G.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Correspondence: (R.S.D.); (N.A.O.); Tel.: +1-402-995-4751 (R.S.D.); +1-402-995-3735 (N.A.O.); Fax: +1-402-449-0604 (R.S.D. & N.A.O.)
| |
Collapse
|
29
|
Osna NA, Ganesan M, Seth D, Wyatt TA, Kidambi S, Kharbanda KK. Second hits exacerbate alcohol-related organ damage: an update. Alcohol Alcohol 2021; 56:8-16. [PMID: 32869059 PMCID: PMC7768623 DOI: 10.1093/alcalc/agaa085] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 06/09/2020] [Accepted: 07/31/2020] [Indexed: 02/05/2023] Open
Abstract
Chronic and excessive alcohol abuse cause direct and indirect detrimental effects on a wide range of body organs and systems and accounts for ~4% of deaths worldwide. Many factors influence the harmful effects of alcohol. This concise review presents newer insights into the role of select second hits in influencing the progression of alcohol-induced organ damage by synergistically acting to generate a more dramatic downstream biological defect. This review specifically addresses on how a lifestyle factor of high fat intake exacerbates alcoholic liver injury and its progression. This review also provides the mechanistic insights into how increasing matrix stiffness during liver injury promotes alcohol-induced fibrogenesis. It also discusses how hepatotropic viral (HCV, HBV) infections as well as HIV (which is traditionally not known to be hepatotropic), are potentiated by alcohol exposure to promote hepatotoxicity and fibrosis progression. Finally, this review highlights the impact of reactive aldehydes generated during alcohol and cigarette smoke coexposure impair innate antimicrobial defense and increased susceptibility to infections. This review was inspired by the symposium held at the 17th Congress of the European Society for Biomedical research on Alcoholism in Lille, France entitled 'Second hits in alcohol-related organ damage'.
Collapse
Affiliation(s)
- Natalia A Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
| | - Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
| | - Devanshi Seth
- Drug Health Services, Royal Prince Alfred Hospital, Missenden Road, Camperdown, New South Wales 2050, Australia
- Centenary Institute of Cancer Medicine and Cell Biology, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Todd A Wyatt
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska 68105, USA
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
- Department of Environmental, Agricultural and Occupational Health, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA
| | - Srivatsan Kidambi
- Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
| | - Kusum K Kharbanda
- Corresponding author: Veterans Affairs Nebraska-Western Iowa Health Care System, Research Service (151), 4101 Woolworth Avenue, Omaha, Nebraska 68105. USA. Tel.: +1-402-995-3752; Fax: +1-402-995-4600; E-mail:
| |
Collapse
|
30
|
Rasineni K, Lee SML, McVicker BL, Osna NA, Casey CA, Kharbanda KK. Susceptibility of Asialoglycoprotein Receptor-Deficient Mice to Lps/Galactosamine Liver Injury and Protection by Betaine Administration. Biology (Basel) 2020; 10:biology10010019. [PMID: 33396223 PMCID: PMC7823640 DOI: 10.3390/biology10010019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 12/27/2020] [Indexed: 02/05/2023]
Abstract
BACKGROUND Work from our laboratory has shown that the ethanol-induced increase in apoptotic hepatocellular death is closely related to the impairment in the ability of the asialoglycoprotein receptor (ASGP-R) to remove neighboring apoptotic cells. In this study, we assessed the role of ASGP-R in fulminant liver failure and investigated whether prior treatment with betaine (a naturally occurring tertiary amine) is protective. METHODS Lipopolysaccharide (LPS; 50 μg/kg BW) and galactosamine (GalN; 350 mg/kg BW) were injected together to wild-type and ASGP-R-deficient mice that were treated for two weeks prior with or without 2% betaine in drinking water. The mice were sacrificed 1.5, 3, or 4.5 h post-injection, and tissue samples were collected. RESULTS LPS/GalN injection generate distinct molecular processes, which includes increased production of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6), thus causing apoptosis as evident by increased caspase-3 activity. ASGP-R deficient animals showed increased liver caspase activities, serum TNF-α and IL-6 levels, as well as more pronounced liver damage compared with the wild-type control animals after intraperitoneal injection of LPS/GalN. In addition, prior administration of betaine was found to significantly attenuate the LPS/GalN-induced increases in liver injury parameters. CONCLUSION Our work underscores the importance of normal functioning of ASGP-R in preventing severe liver damage and signifies a therapeutic role of betaine in prevention of liver injuries from toxin-induced fulminant liver failure.
Collapse
Affiliation(s)
- Karuna Rasineni
- Research Service, Veterans’ Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (K.R.); (B.L.M.); (N.A.O.); (C.A.C.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| | - Serene M. L. Lee
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| | - Benita L. McVicker
- Research Service, Veterans’ Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (K.R.); (B.L.M.); (N.A.O.); (C.A.C.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| | - Natalia A. Osna
- Research Service, Veterans’ Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (K.R.); (B.L.M.); (N.A.O.); (C.A.C.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| | - Carol A. Casey
- Research Service, Veterans’ Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (K.R.); (B.L.M.); (N.A.O.); (C.A.C.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA;
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Kusum K. Kharbanda
- Research Service, Veterans’ Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (K.R.); (B.L.M.); (N.A.O.); (C.A.C.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA;
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Correspondence: ; Tel.: +1-402-995-3752; Fax: +1-402-995-4600
| |
Collapse
|
31
|
New-Aaron M, Ganesan M, Dagur RS, Kharbanda KK, Poluektova LY, Osna NA. Obeticholic acid attenuates human immunodeficiency virus/alcohol metabolism-induced pro-fibrotic activation in liver cells. World J Hepatol 2020; 12:965-975. [PMID: 33312422 PMCID: PMC7701963 DOI: 10.4254/wjh.v12.i11.965] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/16/2020] [Accepted: 10/05/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The morbidity and mortality of human immunodeficiency virus (HIV)-infection is often associated with liver disease, which progresses slowly into severe liver dysfunction. There are multiple insults which exacerbate HIV-related liver injury, including HIV-associated dysregulation of lipid metabolism and fat turnover, co-infections with hepatotropic viruses and alcohol abuse. As we reported before, exposure of hepatocytes to HIV and alcohol metabolites causes high oxidative stress, impairs proteasomal and lysosomal functions leading to accumulation of HIV in these cells, which end-ups with apoptotic cell death and finally promotes development of liver fibrosis.
AIM To study whether obeticholic acid (OCA) prevents HIV/ethanol metabolism-induced hepatotoxicity and subsequent activation of hepatic stellate cells (HSC) by HIV+ apoptotic hepatocyte engulfment.
METHODS Huh7.5-CYP (RLW) cells were exposed to HIV and acetaldehyde-generating system (AGS) in the presence or absence of OCA. In the cells, we measured the expression of HIV-related markers: HIVgagRNA-by real-time polymerase chain reaction (PCR), p24- by western blot, HIV DNA-by semi-nested PCR, integrated HIV DNA-by ddPCR. Lysosomal and proteasomal activities were measured using fluorometrically-labeled substrates. For hepatocyte apoptosis, cleaved caspase 3 and cleaved PARP were visualized by western blot and cytokeratin 18- by M30 ELISA-in supernatants. Apoptotic bodies were generated from untreated and HIV-treated RLW cells exposed to UV light. Pro-fibrotic activation of HSC was characterized by Col1A1 and transforming growth factor-β mRNAs, while inflammasome activation- by NLRP3, caspase 1, interleukin (IL)-6, IL-1β mRNA levels.
RESULTS In RLW cells, OCA treatment attenuated HIV-AGS-induced accumulation of HIVgagRNA, HIV DNA and p24. OCA suppressed reactive oxygen species production and restored chymotrypsin-like proteasome activity as well as cathepsin B lysosome activity. OCA also decreased HIV-AGS-triggered apoptosis in RLW cells. Exposure of HIV-containing apoptotic hepatocytes to HSC prevented activation of inflammasome and induced pro-fibrotic activation in these cells.
CONCLUSION We conclude that by suppressing oxidative stress and restoring proteasomal and lysosomal functions impaired by HIV and ethanol metabolism, OCA decreases accumulation of HIV in hepatocytes, leading to down-regulation of apoptosis in these cells. In addition, OCA reverses pro-fibrotic and inflammasome-related activation of HSC triggered by engulfment of HIV-containing apoptotic hepatocytes, potentially contributing to suppression of liver fibrosis development.
Collapse
Affiliation(s)
- Moses New-Aaron
- Department of Environmental, Agriculture and Occupational Health, College of Public Health, University of Nebraska Medical Center, Omaha, NE 68105, United States
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
| | - Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, United States
| | - Raghubendra Singh Dagur
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, United States
| | - Kusum K Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, United States
| | - Larisa Y Poluektova
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Natalia A Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, United States
| |
Collapse
|
32
|
Ganesan M, Mathews S, Makarov E, Petrosyan A, Kharbanda KK, Kidambi S, Poluektova LY, Casey CA, Osna NA. Acetaldehyde suppresses HBV-MHC class I complex presentation on hepatocytes via induction of ER stress and Golgi fragmentation. Am J Physiol Gastrointest Liver Physiol 2020; 319:G432-G442. [PMID: 32755306 PMCID: PMC7654643 DOI: 10.1152/ajpgi.00109.2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Alcohol consumption worsens hepatitis B virus (HBV) infection pathogenesis. We have recently reported that acetaldehyde suppressed HBV peptide-major histocompatibility complex I (MHC class I) complex display on hepatocytes, limiting recognition and subsequent removal of the infected hepatocytes by HBV-specific cytotoxic T lymphocytes (CTLs). This suppression was attributed to impaired processing of antigenic peptides by the proteasome. However, in addition to proteasome dysfunction, alcohol may induce endoplasmic reticulum (ER) stress and Golgi fragmentation in HBV-infected liver cells to reduce uploading of viral peptides to MHC class I and/or trafficking of this complex to the hepatocyte surface. Hence, the aim of this study was to elucidate whether alcohol-induced ER stress and Golgi fragmentation affect HBV peptide-MHC class I complex presentation on HBV+ hepatocytes. Here, we demonstrate that, while both acetaldehyde and HBV independently cause ER stress and Golgi fragmentation, the combined exposure provided an additive effect. Thus we observed an activation of the inositol-requiring enzyme 1α-X-box binding protein 1 and activation transcription factor (ATF)6α, but not the phospho PKR-like ER kinase-phospho eukaryotic initiation factor 2α-ATF4-C/EBP homologous protein arms of ER stress in HBV-transfected cells treated with acetaldehyde-generating system (AGS). In addition, Golgi proteins trans-Golgi network 46, GM130, and Giantin revealed punctate distribution, indicating Golgi fragmentation upon AGS exposure. Furthermore, the effects of acetaldehyde were reproduced by treatment with ER stress inducers, thapsigargin and tunicamycin, which also decreased the display of this complex and MHC class I turnover in HepG2.2.15 cells and HBV-infected primary human hepatocytes. Taken together, alcohol-induced ER stress and Golgi fragmentation contribute to the suppression of HBV peptide-MHC class I complex presentation on HBV+ hepatocytes, which may diminish their recognition by CTLs and promote persistence of HBV infection in hepatocytes.NEW & NOTEWORTHY Our current findings show that acetaldehyde accelerates endoplasmic reticulum (ER) stress by activating the unfolded protein response arms inositol-requiring enzyme 1α-X-box binding protein 1 and activation transcription factor (ATF)6α but not phospho PKR-like ER kinase-p eukaryotic initiation factor 2α-ATF4-C/EBP homologous protein in hepatitis B virus (HBV)-transfected HepG2.2.15 cells. It also potentiates Golgi fragmentation, as evident by punctate distribution of Golgi proteins, GM130, trans-Golgi network 46, and Giantin. While concomitantly increasing HBV DNA and HBV surface antigen titers, acetaldehyde-induced ER stress suppresses the presentation of HBV peptide-major histocompatibility complex I complexes on hepatocyte surfaces, thereby promoting the persistence of HBV infection in the liver.
Collapse
Affiliation(s)
- Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Saumi Mathews
- Department of Pharmacology and Experimental Neuroscience, Omaha, Nebraska
| | - Edward Makarov
- Department of Pharmacology and Experimental Neuroscience, Omaha, Nebraska
| | - Armen Petrosyan
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Kusum K Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Srivatsan Kidambi
- Department of Chemical and Biomolecular Engineering, University of Nebraska at Lincoln, Nebraska
| | | | - Carol A Casey
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Natalia A Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| |
Collapse
|
33
|
Osna NA, Bhatia R, Thompson C, Batra SK, Kumar S, Cho Y, Szabo G, Molina PE, Weinman SA, Ganesan M, Kharbanda KK. Role of non-Genetic Risk Factors in Exacerbating Alcohol-related organ damage. Alcohol 2020; 87:63-72. [PMID: 32497558 PMCID: PMC7483997 DOI: 10.1016/j.alcohol.2020.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 05/11/2020] [Accepted: 05/12/2020] [Indexed: 02/08/2023]
Abstract
This review provides a summary of the symposium titled "Role of Non-Genetic Risk Factors in Exacerbating Alcohol-Related Organ Damage", which was held at the 42nd Annual Meeting of the Research Society on Alcoholism. The goals of the symposium were to provide newer insights into the role of non-genetic factors, including specific external factors, notably infectious agents or lifestyle factors, that synergistically act to exacerbate alcohol pathogenicity to generate more dramatic downstream biological defects. This summary of the symposium will benefit junior/senior basic scientists and clinicians currently investigating/treating alcohol-induced organ pathology, as well as undergraduate, graduate, and post-graduate students and fellows.
Collapse
Affiliation(s)
- Natalia A Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Rakesh Bhatia
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Christopher Thompson
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Surinder K Batra
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Sushil Kumar
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Yeonhee Cho
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, United States; Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Gyongyi Szabo
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Patricia E Molina
- Department of Physiology, LSUHSC-New Orleans, New Orleans, LA, United States
| | - Steven A Weinman
- Department of Internal Medicine and the Liver Center, University of Kansas Medical Center, Kansas City, KS, United States
| | - Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Kusum K Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, United States; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, United States; Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States.
| |
Collapse
|
34
|
Arumugam MK, Talawar S, Listenberger L, Donohue TM, Osna NA, Kharbanda KK. Role of Elevated Intracellular S-Adenosylhomocysteine in the Pathogenesis of Alcohol-Related Liver Disease. Cells 2020; 9:cells9061526. [PMID: 32585865 PMCID: PMC7349643 DOI: 10.3390/cells9061526] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/19/2020] [Accepted: 06/21/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The earliest manifestation of alcohol-related liver disease (ALD) is steatosis, characterized by the accumulation of lipid droplets (LDs) in hepatocytes. Findings from our laboratory have indicated that many pathological changes, including steatosis, correlate with the alcohol-induced hepatocellular increases in S-adenosylhomocysteine (SAH). Based on these considerations, we hypothesized that an experimental increase in intracellular SAH alone will result in similar steatotic changes to those seen after alcohol exposure. METHODS Freshly isolated rat hepatocytes grown on collagen-coated plates were exposed to serum-free medium containing 50 µmol/L oleic acid and varying concentrations of 3-deazaadenosine (DZA) to experimentally elevate intracellular SAH levels. RESULTS Overnight exposure to DZA treatment dose-dependently increased hepatocellular triglyceride accumulation, which was also evident by morphological visualization of larger-sized LDs. The rise in triglycerides and LDs accompanied increases in mRNA and protein levels of several LD-associated proteins known to regulate LD number and size. Furthermore, DZA treatment caused a decline in the levels of lipases that prevent fat accumulation as well as increased the expression of factors involved in lipogenesis and fatty acid mobilization. Collectively, our results indicate that the elevation of intracellular SAH is sufficient to promote fat accumulation in hepatocytes, which is similar to that seen after alcohol exposure.
Collapse
Affiliation(s)
- Madan Kumar Arumugam
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.K.A.); (S.T.); (T.M.D.J.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Sharanappa Talawar
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.K.A.); (S.T.); (T.M.D.J.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Laura Listenberger
- Departments of Biology and Chemistry, St. Olaf College, Northfield, MN 55057, USA;
| | - Terrence M. Donohue
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.K.A.); (S.T.); (T.M.D.J.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.K.A.); (S.T.); (T.M.D.J.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.K.A.); (S.T.); (T.M.D.J.); (N.A.O.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Correspondence: ; Tel.: +1-402-995-3752; Fax: +1-402-995-4600
| |
Collapse
|
35
|
Rasineni K, Srinivasan MP, Balamurugan AN, Kaphalia BS, Wang S, Ding WX, Pandol SJ, Lugea A, Simon L, Molina PE, Gao P, Casey CA, Osna NA, Kharbanda KK. Recent Advances in Understanding the Complexity of Alcohol-Induced Pancreatic Dysfunction and Pancreatitis Development. Biomolecules 2020; 10:biom10050669. [PMID: 32349207 PMCID: PMC7277520 DOI: 10.3390/biom10050669] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/13/2020] [Accepted: 04/15/2020] [Indexed: 02/05/2023] Open
Abstract
Chronic excessive alcohol use is a well-recognized risk factor for pancreatic dysfunction and pancreatitis development. Evidence from in vivo and in vitro studies indicates that the detrimental effects of alcohol on the pancreas are from the direct toxic effects of metabolites and byproducts of ethanol metabolism such as reactive oxygen species. Pancreatic dysfunction and pancreatitis development are now increasingly thought to be multifactorial conditions, where alcohol, genetics, lifestyle, and infectious agents may determine the initiation and course of the disease. In this review, we first highlight the role of nonoxidative ethanol metabolism in the generation and accumulation of fatty acid ethyl esters (FAEEs) that cause multi-organellar dysfunction in the pancreas which ultimately leads to pancreatitis development. Further, we discuss how alcohol-mediated altered autophagy leads to the development of pancreatitis. We also provide insights into how alcohol interactions with other co-morbidities such as smoking or viral infections may negatively affect exocrine and endocrine pancreatic function. Finally, we present potential strategies to ameliorate organellar dysfunction which could attenuate pancreatic dysfunction and pancreatitis severity.
Collapse
Affiliation(s)
- Karuna Rasineni
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA; (C.A.C.); (N.A.O.); (K.K.K.)
- Research Service, Veterans’ Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Correspondence: ; Tel.: +1-402-995-3548; Fax: +1-402-995-4600
| | - Mukund P. Srinivasan
- Department of Pathology, The University of Texas Medical Branch, Galveston, TX 77555-0419, USA; (M.P.S.); (B.S.K.)
| | - Appakalai N. Balamurugan
- Division of Pediatric General and Thoracic Surgery, Cincinnati Children’s Hospital Medical Center, Department of Surgery, University of Cincinnati, Cincinnati, OH 45229, USA;
| | - Bhupendra S. Kaphalia
- Department of Pathology, The University of Texas Medical Branch, Galveston, TX 77555-0419, USA; (M.P.S.); (B.S.K.)
| | - Shaogui Wang
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, MO 66160, USA; (S.W.); (W.-X.D.)
| | - Wen-Xing Ding
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, MO 66160, USA; (S.W.); (W.-X.D.)
| | - Stephen J. Pandol
- Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (S.J.P.); (A.L.)
| | - Aurelia Lugea
- Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (S.J.P.); (A.L.)
| | - Liz Simon
- Department of Physiology, Louisiana State University Health Sciences Center-New Orleans, New Orleans, LA 70112, USA; (L.S.); (P.E.M.)
| | - Patricia E. Molina
- Department of Physiology, Louisiana State University Health Sciences Center-New Orleans, New Orleans, LA 70112, USA; (L.S.); (P.E.M.)
| | - Peter Gao
- Program Director, Division of Metabolism and Health Effects, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD 20892-6902, USA;
| | - Carol A. Casey
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA; (C.A.C.); (N.A.O.); (K.K.K.)
- Research Service, Veterans’ Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198-5870, USA
| | - Natalia A. Osna
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA; (C.A.C.); (N.A.O.); (K.K.K.)
- Research Service, Veterans’ Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
| | - Kusum K. Kharbanda
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA; (C.A.C.); (N.A.O.); (K.K.K.)
- Research Service, Veterans’ Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198-5870, USA
| |
Collapse
|
36
|
Rasineni K, Kubik JL, Knight KL, Hall L, Casey CA, Kharbanda KK. Ghrelin regulates adipose tissue metabolism: Role in hepatic steatosis. Chem Biol Interact 2020; 322:109059. [PMID: 32171850 DOI: 10.1016/j.cbi.2020.109059] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 03/10/2020] [Indexed: 02/09/2023]
Abstract
Fatty liver is the earliest and most common response of the liver to consumption of excessive alcohol. Steatosis can predispose the fatty liver to develop progressive liver damage. Chief among the many mechanisms involved in development of hepatic steatosis is dysregulation of insulin-mediated adipose tissue metabolism. Particularly, it is the enhanced adipose lipolysis-derived free fatty acids and their delivery to the liver that ultimately results in hepatic steatosis. The adipose-liver axis is modulated by hormones, particularly insulin and adiponectin. In recent studies, we demonstrated that an alcohol-induced increase in serum ghrelin levels impairs insulin secretion from pancreatic β-cells. The consequent reduction in circulating insulin levels promotes adipose lipolysis and mobilization of fatty acids to the liver to ultimately contribute to hepatic steatosis. Because many tissues, including adipose tissue, express ghrelin receptor we hypothesized that ghrelin may directly affect energy metabolism in adipocytes. We have exciting new preliminary data which shows that treatment of premature 3T3-L1 adipocytes with ghrelin impairs adipocyte differentiation and inhibits lipid accumulation in the tissue designed to store energy in the form of fat. We further observed that ghrelin treatment of differentiated adipocytes significantly inhibited secretion of adiponectin, a hepatoprotective hormone that reduces lipid synthesis and promotes lipid oxidation. These results were corroborated by our observations of a significant increase in serum adiponectin levels in ethanol-fed rats treated with a ghrelin receptor antagonist verses the un-treated ethanol-fed rats. Interestingly, in adipocytes, ghrelin also increases secretion of interleukin-6 (IL-6) and CCL2 (chemokine [C-C motif] ligand 2), cytokines which promote hepatic inflammation and progression of liver disease. To summarize, the alcohol-induced increase in serum ghrelin levels dysregulates adipose-liver interaction and promotes hepatic steatosis by increasing the free fatty acid released from adipose for hepatic uptake, and by altering adiponectin and cytokine secretion. Taken together, our data indicates that targeting the activity of ghrelin may be a powerful treatment strategy.
Collapse
Affiliation(s)
- Karuna Rasineni
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Research Service, Veterans' Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA.
| | - Jacy L Kubik
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Research Service, Veterans' Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
| | - Kurt L Knight
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Research Service, Veterans' Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
| | - Lukas Hall
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Carol A Casey
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Research Service, Veterans' Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA; Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Kusum K Kharbanda
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Research Service, Veterans' Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA; Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| |
Collapse
|
37
|
Ganesan M, Eikenberry A, Poluektova LY, Kharbanda KK, Osna NA. Role of alcohol in pathogenesis of hepatitis B virus infection. World J Gastroenterol 2020; 26:883-903. [PMID: 32206001 PMCID: PMC7081008 DOI: 10.3748/wjg.v26.i9.883] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 02/09/2020] [Accepted: 02/14/2020] [Indexed: 02/06/2023] Open
Abstract
Hepatitis B virus (HBV) and alcohol abuse often contribute to the development of end-stage liver disease. Alcohol abuse not only causes rapid progression of liver disease in HBV infected patients but also allows HBV to persist chronically. Importantly, the mechanism by which alcohol promotes the progression of HBV-associated liver disease are not completely understood. Potential mechanisms include a suppressed immune response, oxidative stress, endoplasmic reticulum and Golgi apparatus stresses, and increased HBV replication. Certainly, more research is necessary to gain a better understanding of these mechanisms such that treatment(s) to prevent rapid liver disease progression in alcohol-abusing HBV patients could be developed. In this review, we discuss the aforementioned factors for the higher risk of liver diseases in alcohol-induced HBV pathogenies and suggest the areas for future studies in this field.
Collapse
Affiliation(s)
- Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of Nebraska Medical Center, Omaha, NE 68105, United States
| | - Allison Eikenberry
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of Nebraska Medical Center, Omaha, NE 68105, United States
| | - Larisa Y Poluektova
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Kusum K Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of Nebraska Medical Center, Omaha, NE 68105, United States
| | - Natalia A Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of Nebraska Medical Center, Omaha, NE 68105, United States
| |
Collapse
|
38
|
Kirpich IA, Warner DR, Feng W, Joshi-Barve S, McClain CJ, Seth D, Zhong W, Zhou Z, Osna NA, Kharbanda KK. Mechanisms, biomarkers and targets for therapy in alcohol-associated liver injury: From Genetics to nutrition: Summary of the ISBRA 2018 symposium. Alcohol 2020; 83:105-114. [PMID: 31129175 PMCID: PMC7043088 DOI: 10.1016/j.alcohol.2019.05.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 02/06/2023]
Abstract
The symposium "Mechanisms, Biomarkers and Targets for Therapy in Alcohol-associated Liver Injury: From Genetics to Nutrition" was held at the 19th Congress of International Society for Biomedical Research on Alcoholism on September 13th, 2018 in Kyoto, Japan. The goal of the symposium was to discuss the importance of genetics and nutrition in alcoholic liver disease (ALD) development from mechanistic and therapeutic perspectives. The following is a summary of this session addressing the gene polymorphisms in ALD, the role of zinc in gut-liver axis perturbations associated with ALD, highlighting the importance of dietary fat in ALD pathogenesis, the hepatic n6 and n3 PUFA oxylipin pattern associated with ethanol-induced liver injury, and finally deliberating on new biomarkers for alcoholic hepatitis and their implications for diagnosis and therapy. This summary of the symposium will benefit junior and senior faculty currently investigating alcohol-induced organ pathology as well as undergraduate, graduate, and post-graduate students and fellows.
Collapse
Affiliation(s)
- Irina A Kirpich
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, Louisville, KY, USA; Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA; University of Louisville Alcohol Center, University of Louisville School of Medicine, Louisville, KY, USA; Robley Rex Veterans Medical Center, Louisville, KY, USA; Hepatobiology & Toxicology Program, University of Louisville, Louisville, KY, USA
| | - Dennis R Warner
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - Wenke Feng
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, Louisville, KY, USA; Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA; University of Louisville Alcohol Center, University of Louisville School of Medicine, Louisville, KY, USA; Hepatobiology & Toxicology Program, University of Louisville, Louisville, KY, USA
| | - Swati Joshi-Barve
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, Louisville, KY, USA; Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA; University of Louisville Alcohol Center, University of Louisville School of Medicine, Louisville, KY, USA; Hepatobiology & Toxicology Program, University of Louisville, Louisville, KY, USA
| | - Craig J McClain
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, Louisville, KY, USA; Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA; University of Louisville Alcohol Center, University of Louisville School of Medicine, Louisville, KY, USA; Robley Rex Veterans Medical Center, Louisville, KY, USA; Hepatobiology & Toxicology Program, University of Louisville, Louisville, KY, USA
| | - Devanshi Seth
- Drug Health Services, Royal Prince Alfred Hospital, Camperdown, NSW, Australia, And Centenary Institute of Cancer Medicine and Cell Biology, The University of Sydney, Sydney, NSW, Australia
| | - Wei Zhong
- Center for Translational Biomedical Research, Department of Nutrition, University of North Carolina at Greensboro, Kannapolis, NC, 28081, USA
| | - Zhanxiang Zhou
- Center for Translational Biomedical Research, Department of Nutrition, University of North Carolina at Greensboro, Kannapolis, NC, 28081, USA
| | - Natalia A Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Kusum K Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA; Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA.
| |
Collapse
|
39
|
Ganesan M, New-Aaron M, Dagur RS, Makarov E, Wang W, Kharbanda KK, Kidambi S, Poluektova LY, Osna NA. Alcohol Metabolism Potentiates HIV-Induced Hepatotoxicity: Contribution to End-Stage Liver Disease. Biomolecules 2019; 9:biom9120851. [PMID: 31835520 PMCID: PMC6995634 DOI: 10.3390/biom9120851] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 11/27/2019] [Accepted: 12/03/2019] [Indexed: 02/07/2023] Open
Abstract
In an era of improved survival due to modern antiretroviral therapy, liver disease has become a major cause of morbidity and mortality, resulting in death in 15-17% of human immunodeficiency virus (HIV)-infected patients. Alcohol enhances HIV-mediated liver damage and promotes the progression to advanced fibrosis and cirrhosis. However, the mechanisms behind these events are uncertain. Here, we hypothesize that ethanol metabolism potentiates accumulation of HIV in hepatocytes, causing oxidative stress and intensive apoptotic cell death. Engulfment of HIV-containing apoptotic hepatocytes by non-parenchymal cells (NPCs) triggers their activation and liver injury progression. This study was performed on primary human hepatocytes and Huh7.5-CYP cells infected with HIV-1ADA, and major findings were confirmed by pilot data obtained on ethanol-fed HIV-injected chimeric mice with humanized livers. We demonstrated that ethanol exposure potentiates HIV accumulation in hepatocytes by suppressing HIV degradation by lysosomes and proteasomes. This leads to increased oxidative stress and hepatocyte apoptosis. Exposure of HIV-infected apoptotic hepatocytes to NPCs activates the inflammasome in macrophages and pro-fibrotic genes in hepatic stellate cells. We conclude that while HIV and ethanol metabolism-triggered apoptosis clears up HIV-infected hepatocytes, continued generation of HIV-expressing apoptotic bodies may be detrimental for progression of liver inflammation and fibrosis due to constant activation of NPCs.
Collapse
Affiliation(s)
- Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.G.); (M.N.-A.); (R.S.D.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Moses New-Aaron
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.G.); (M.N.-A.); (R.S.D.); (K.K.K.)
- Department of Environmental, Agriculture and Occupational Health, College of Public Health, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Raghubendra Singh Dagur
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.G.); (M.N.-A.); (R.S.D.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Edward Makarov
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68105, USA; (E.M.); (W.W.); (L.Y.P.)
| | - Weimin Wang
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68105, USA; (E.M.); (W.W.); (L.Y.P.)
| | - Kusum K. Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.G.); (M.N.-A.); (R.S.D.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
| | - Srivatsan Kidambi
- Department of Chemical and Biomolecular Engineering, University of Nebraska, Lincoln, NE 68588, USA;
| | - Larisa Y. Poluektova
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68105, USA; (E.M.); (W.W.); (L.Y.P.)
| | - Natalia A. Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (M.G.); (M.N.-A.); (R.S.D.); (K.K.K.)
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, USA
- Department of Environmental, Agriculture and Occupational Health, College of Public Health, University of Nebraska Medical Center, Omaha, NE 68105, USA
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68105, USA; (E.M.); (W.W.); (L.Y.P.)
- Correspondence: ; Tel.: +1-402-995-3735; Fax: +1-402-449-0604
| |
Collapse
|
40
|
|
41
|
Rasineni K, Kubik JL, Casey CA, Kharbanda KK. Inhibition of Ghrelin Activity by Receptor Antagonist [d-Lys-3] GHRP-6 Attenuates Alcohol-Induced Hepatic Steatosis by Regulating Hepatic Lipid Metabolism. Biomolecules 2019; 9:biom9100517. [PMID: 31546643 PMCID: PMC6843513 DOI: 10.3390/biom9100517] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 09/18/2019] [Accepted: 09/19/2019] [Indexed: 01/13/2023] Open
Abstract
Alcoholic steatosis, characterized by an accumulation of triglycerides in hepatocytes, is one of the earliest pathological changes in the progression of alcoholic liver disease. In our previous study, we showed that alcohol-induced increase in serum ghrelin levels impair insulin secretion from pancreatic β-cells. The consequent reduction in the circulating insulin levels promote adipose-derived fatty acid mobilization to ultimately contribute to hepatic steatosis. In this study, we determined whether inhibition of ghrelin activity in chronic alcohol-fed rats could improve hepatic lipid homeostasis at the pancreas-adipose-liver axis. Adult Wistar rats were fed Lieber-DeCarli control or an ethanol liquid diet for 7 weeks. At 6 weeks, a subset of rats in each group were injected with either saline or ghrelin receptor antagonist, [d-Lys-3] GHRP-6 (DLys; 9 mg/kg body weight) for 5 days and all rats were sacrificed 2 days later. DLys treatment of ethanol rats improved pancreatic insulin secretion, normalized serum insulin levels, and the adipose lipid metabolism, as evidenced by the decreased serum free fatty acids (FFA). DLys treatment of ethanol rats also significantly decreased the circulating FFA uptake, de novo hepatic fatty acid synthesis ultimately attenuating alcoholic steatosis. To summarize, inhibition of ghrelin activity reduced alcoholic steatosis by improving insulin secretion, normalizing serum insulin levels, inhibiting adipose lipolysis, and preventing fatty acid uptake and synthesis in the liver. Our studies provided new insights on the important role of ghrelin in modulating the pancreas-adipose-liver, and promoting adipocyte lipolysis and hepatic steatosis. The findings offer a therapeutic approach of not only preventing alcoholic liver injury but also treating it.
Collapse
Affiliation(s)
- Karuna Rasineni
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA.
- Research Service, Veterans' Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.
| | - Jacy L Kubik
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA.
- Research Service, Veterans' Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.
| | - Carol A Casey
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA.
- Research Service, Veterans' Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.
| | - Kusum K Kharbanda
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA.
- Research Service, Veterans' Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.
| |
Collapse
|
42
|
Rasineni K, Casey CA, Kharbanda KK. Reply to "Letter to Editor: Chronic alcohol exposure alters circulating insulin and ghrelin levels in hepatic steatosis: a translational research perspective". Am J Physiol Gastrointest Liver Physiol 2019; 317:G361-G362. [PMID: 31461305 PMCID: PMC6774088 DOI: 10.1152/ajpgi.00143.2019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 06/03/2019] [Indexed: 01/31/2023]
Affiliation(s)
- Karuna Rasineni
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Carol A Casey
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Kusum K Kharbanda
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| |
Collapse
|
43
|
Ganesan M, Krutik VM, Makarov E, Mathews S, Kharbanda KK, Poluektova LY, Casey CA, Osna NA. Acetaldehyde suppresses the display of HBV-MHC class I complexes on HBV-expressing hepatocytes. Am J Physiol Gastrointest Liver Physiol 2019; 317:G127-G140. [PMID: 31141391 PMCID: PMC6734374 DOI: 10.1152/ajpgi.00064.2019] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Hepatitis B virus (HBV) infection and alcoholism are major public health problems worldwide, contributing to the development of end-stage liver disease. Alcohol intake affects HBV infection pathogenesis and treatment outcomes. HBV-specific cytotoxic T lymphocytes (CTLs) play an important role in HBV clearance. Many previous studies have focused on alcohol-induced impairments of the immune response. However, it is not clear whether alcohol alters the presentation of HBV peptide-major histocompatibility complex (MHC) class I complexes on infected hepatocytes resulting in escape of its recognition by CTLs. Hence, the focus of this study was to investigate the mechanisms by which ethanol metabolism affects the presentation of CTL epitope on HBV-infected hepatocytes. As demonstrated here, although continuous cell exposure to acetaldehyde-generating system (AGS) increased HBV load in HepG2.2.15 cells, it decreased the expression of HBV core peptide 18-27-human leukocyte antigen-A2complex (CTL epitope) on the cell surface. Moreover, we observed AGS-induced suppression of chymotrypsin- and trypsin-like proteasome activities necessary for peptide processing by proteasome as well as a decline in IFNγ-stimulated immunoproteasome (IPR) function and expression of PA28 activator and immunoproteasome subunits LMP7 and LMP2. Furthermore, IFNγ-induced activation of peptide-loading complex (PLC) components, such as transporter associated with antigen processing (TAP1) and tapasin, were suppressed by AGS. The attenuation of IPR and PLC activation was attributed to AGS-triggered impairment of IFNγ signaling in HepG2.2.15 cells. Collectively, all these downstream events reduced the display of HBV peptide-MHC class I complexes on the hepatocyte surface, which may suppress CTL activation and the recognition of CTL epitopes on HBV-expressing hepatocytes by immune cells, thereby leading to persistence of liver inflammation.NEW & NOTEWORTHY Our study shows that in HBV-expressing HepG2.2.15 cells, acetaldehyde alters HBV peptide processing by suppressing chymotrypsin- and trypsin-like proteasome activities and decreases IFNγ-stimulated immunoproteasome function and expression of PA28 activator and immunoproteasome subunits. It also suppresses IFNγ-induced activation of peptide-loading complex (PLC) components due to impairment of IFNγ signaling via the JAK-STAT1 pathway. These acetaldehyde-induced dysfunctions reduced the display of HBV peptide-MHC class I complexes on the hepatocyte surface, thereby leading to persistence of HBV infection.
Collapse
Affiliation(s)
- Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Vjaceslav M Krutik
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Edward Makarov
- Department of Pharmacology and Experimental Neuroscience, Omaha, Nebraska
| | - Saumi Mathews
- Department of Pharmacology and Experimental Neuroscience, Omaha, Nebraska
| | - Kusum K Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | | | - Carol A Casey
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Natalia A Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| |
Collapse
|
44
|
Yang L, Yang C, Thomes PG, Kharbanda KK, Casey CA, McNiven MA, Donohue TM. Lipophagy and Alcohol-Induced Fatty Liver. Front Pharmacol 2019; 10:495. [PMID: 31143122 PMCID: PMC6521574 DOI: 10.3389/fphar.2019.00495] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 04/18/2019] [Indexed: 12/14/2022] Open
Abstract
This review describes the influence of ethanol consumption on hepatic lipophagy, a selective form of autophagy during which fat-storing organelles known as lipid droplets (LDs) are degraded in lysosomes. During classical autophagy, also known as macroautophagy, all forms of macromolecules and organelles are sequestered in autophagosomes, which, with their cargo, fuse with lysosomes, forming autolysosomes in which the cargo is degraded. It is well established that excessive drinking accelerates intrahepatic lipid biosynthesis, enhances uptake of fatty acids by the liver from the plasma and impairs hepatic secretion of lipoproteins. All the latter contribute to alcohol-induced fatty liver (steatosis). Here, our principal focus is on lipid catabolism, specifically the impact of excessive ethanol consumption on lipophagy, which significantly influences the pathogenesis alcohol-induced steatosis. We review findings, which demonstrate that chronic ethanol consumption retards lipophagy, thereby exacerbating steatosis. This is important for two reasons: (1) Unlike adipose tissue, the liver is considered a fat-burning, not a fat-storing organ. Thus, under normal conditions, lipophagy in hepatocytes actively prevents lipid droplet accumulation, thereby maintaining lipostasis; (2) Chronic alcohol consumption subverts this fat-burning function by slowing lipophagy while accelerating lipogenesis, both contributing to fatty liver. Steatosis was formerly regarded as a benign consequence of heavy drinking. It is now recognized as the "first hit" in the spectrum of alcohol-induced pathologies that, with continued drinking, progresses to more advanced liver disease, liver failure, and/or liver cancer. Complete lipid droplet breakdown requires that LDs be digested to release their high-energy cargo, consisting principally of cholesteryl esters and triacylglycerols (triglycerides). These subsequently undergo lipolysis, yielding free fatty acids that are oxidized in mitochondria to generate energy. Our review will describe recent findings on the role of lipophagy in LD catabolism, how continuous heavy alcohol consumption affects this process, and the putative mechanism(s) by which this occurs.
Collapse
Affiliation(s)
- Li Yang
- Division of Gastroenterology and Hepatology, Digestive Disease Institute, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Changqing Yang
- Division of Gastroenterology and Hepatology, Digestive Disease Institute, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Paul G. Thomes
- Research Service, Department of Veterans Affairs, Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Departments of Internal Medicine and of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Kusum K. Kharbanda
- Research Service, Department of Veterans Affairs, Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Departments of Internal Medicine and of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Carol A. Casey
- Research Service, Department of Veterans Affairs, Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Departments of Internal Medicine and of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Mark A. McNiven
- Division of Gastroenterology and Hepatology, Department of Biochemistry and Molecular Biology, Center for Basic Research in Digestive Diseases, Mayo Clinic, Rochester, MN, United States
| | - Terrence M. Donohue
- Research Service, Department of Veterans Affairs, Nebraska-Western Iowa Health Care System, Omaha, NE, United States
- Departments of Internal Medicine and of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, United States
| |
Collapse
|
45
|
Rasineni K, Thomes PG, Kubik JL, Harris EN, Kharbanda KK, Casey CA. Chronic alcohol exposure alters circulating insulin and ghrelin levels: role of ghrelin in hepatic steatosis. Am J Physiol Gastrointest Liver Physiol 2019; 316:G453-G461. [PMID: 30702902 PMCID: PMC6483023 DOI: 10.1152/ajpgi.00334.2018] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Fatty liver is the earliest response of the liver to excessive ethanol consumption. Central in the development of alcoholic steatosis is increased mobilization of nonesterified free fatty acids (NEFAs) to the liver from the adipose tissue. In this study, we hypothesized that ethanol-induced increase in ghrelin by impairing insulin secretion, could be responsible for the altered lipid metabolism observed in adipose and liver tissue. Male Wistar rats were fed for 5-8 wk with control or ethanol Lieber-DeCarli diet, followed by biochemical analyses in serum and liver tissues. In addition, in vitro studies were conducted on pancreatic islets isolated from experimental rats. We found that ethanol increased serum ghrelin and decreased serum insulin levels in both fed and fasting conditions. These results were corroborated by our observations of a significant accumulation of insulin in pancreatic islets of ethanol-fed rats, indicating that its secretion was impaired. Furthermore, ethanol-induced reduction in circulating insulin was associated with lower adipose weight and increased NEFA levels observed in these rats. Additionally, we found that increased concentration of serum ghrelin was due to increased synthesis and maturation in the stomach of the ethanol-fed rats. We also report that in addition to its effect on the pancreas, ghrelin can also directly act on hepatocytes via the ghrelin receptors and promote fat accumulation. In conclusion, alcohol-induced elevation of circulating ghrelin levels impairs insulin secretion. Consequently, reduced circulating insulin levels likely contribute to increased free fatty acid mobilization from adipose tissue to liver, thereby contributing to hepatic steatosis. NEW & NOTEWORTHY Our studies are the first to report that ethanol-induced increases in ghrelin contribute to impaired insulin secretion, which results in the altered lipid metabolism observed in adipose and liver tissue in the setting of alcoholic fatty liver disease.
Collapse
Affiliation(s)
- Karuna Rasineni
- 1Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska,2Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Paul G. Thomes
- 1Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska,2Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Jacy L. Kubik
- 1Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska,2Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Edward N. Harris
- 3Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, Nebraska
| | - Kusum K. Kharbanda
- 1Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska,2Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Carol A. Casey
- 1Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska,2Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| |
Collapse
|
46
|
Ganesan M, Poluektova LY, Kharbanda KK, Osna NA. Human immunodeficiency virus and hepatotropic viruses co-morbidities as the inducers of liver injury progression. World J Gastroenterol 2019; 25:398-410. [PMID: 30700937 PMCID: PMC6350175 DOI: 10.3748/wjg.v25.i4.398] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/15/2019] [Accepted: 01/18/2019] [Indexed: 02/06/2023] Open
Abstract
Hepatotropic viruses induced hepatitis progresses much faster and causes more liver- related health problems in people co-infected with human immunodeficiency virus (HIV). Although treatment with antiretroviral therapy has extended the life expectancy of people with HIV, liver disease induced by hepatitis B virus (HBV) and hepatitis C virus (HCV) causes significant numbers of non-acquired immune deficiency syndrome (AIDS)-related deaths in co-infected patients. In recent years, new insights into the mechanisms of accelerated fibrosis and liver disease progression in HIV/HCV and HIV/HBV co-infections have been reported. In this paper, we review recent studies examining the natural history and pathogenesis of liver disease in HIV-HCV/HBV co-infection in the era of direct acting antivirals (DAA) and antiretroviral therapy (ART). We also review the novel therapeutics for management of HIV/HCV and HIV/HBV co-infected individuals.
Collapse
Affiliation(s)
- Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, United States
| | - Larisa Y Poluektova
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Kusum K Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, United States
| | - Natalia A Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, United States
| |
Collapse
|
47
|
Listenberger L, Townsend E, Rickertsen C, Hains A, Brown E, Inwards EG, Stoeckman AK, Matis MP, Sampathkumar RS, Osna NA, Kharbanda KK. Decreasing Phosphatidylcholine on the Surface of the Lipid Droplet Correlates with Altered Protein Binding and Steatosis. Cells 2018; 7:cells7120230. [PMID: 30477200 PMCID: PMC6316228 DOI: 10.3390/cells7120230] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 11/19/2018] [Accepted: 11/22/2018] [Indexed: 02/05/2023] Open
Abstract
Alcoholic fatty liver disease (AFLD) is characterized by an abnormal accumulation of lipid droplets (LDs) in the liver. Here, we explore the composition of hepatic LDs in a rat model of AFLD. Five to seven weeks of alcohol consumption led to significant increases in hepatic triglyceride mass, along with increases in LD number and size. Additionally, hepatic LDs from rats with early alcoholic liver injury show a decreased ratio of surface phosphatidylcholine (PC) to phosphatidylethanolamine (PE). This occurred in parallel with an increase in the LD association of perilipin 2, a prominent LD protein. To determine if changes to the LD phospholipid composition contributed to differences in protein association with LDs, we constructed liposomes that modeled the LD PC:PE ratios in AFLD and control rats. Reducing the ratio of PC to PE increased the binding of perilipin 2 to liposomes in an in vitro experiment. Moreover, we decreased the ratio of LD PC:PE in NIH 3T3 and AML12 cells by culturing these cells in choline-deficient media. We again detected increased association of specific LD proteins, including perilipin 2. Taken together, our experiments suggest an important link between LD phospholipids, protein composition, and lipid accumulation.
Collapse
Affiliation(s)
- Laura Listenberger
- Departments of Biology and Chemistry, St. Olaf College, Northfield, MN 55057, USA.
| | - Elizabeth Townsend
- Departments of Biology and Chemistry, St. Olaf College, Northfield, MN 55057, USA.
| | - Cassandra Rickertsen
- Departments of Biology and Chemistry, St. Olaf College, Northfield, MN 55057, USA.
| | - Anastasia Hains
- Departments of Biology and Chemistry, St. Olaf College, Northfield, MN 55057, USA.
| | - Elizabeth Brown
- Departments of Biology and Chemistry, St. Olaf College, Northfield, MN 55057, USA.
| | - Emily G Inwards
- Department of Chemistry, Bethel University, St. Paul, MN 55112, USA.
| | | | - Mitchell P Matis
- Research Service, VA Nebraska-Western Iowa Health Care System, Omaha, NE and Departments of Internal Medicine and Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68105, USA.
| | - Rebecca S Sampathkumar
- Research Service, VA Nebraska-Western Iowa Health Care System, Omaha, NE and Departments of Internal Medicine and Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68105, USA.
| | - Natalia A Osna
- Research Service, VA Nebraska-Western Iowa Health Care System, Omaha, NE and Departments of Internal Medicine and Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68105, USA.
| | - Kusum K Kharbanda
- Research Service, VA Nebraska-Western Iowa Health Care System, Omaha, NE and Departments of Internal Medicine and Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68105, USA.
| |
Collapse
|
48
|
Ganesan M, Poluektova LY, Kharbanda KK, Osna NA. Liver as a target of human immunodeficiency virus infection. World J Gastroenterol 2018; 24:4728-4737. [PMID: 30479460 PMCID: PMC6235802 DOI: 10.3748/wjg.v24.i42.4728] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 10/10/2018] [Accepted: 10/21/2018] [Indexed: 02/06/2023] Open
Abstract
Liver injury is a characteristic feature of human immunodeficiency virus (HIV) infection, which is the second most common cause of mortality in HIV-infected patients. Now it is recognized that liver plays a key role in HIV infection pathogenesis. Antiretroviral therapy (ART), which suppresses HIV infection in permissive immune cells, is less effective in hepatocytes, thereby making these cells a silent reservoir of HIV infection. In addition to direct hepatotoxic effects of HIV, certain ART treatment modalities provide hepatotoxic effects. The exact mechanisms of HIV-triggered chronic hepatitis progression are not elucidated, but the liver is adversely affected by HIV-infection and liver cells are prominently involved in HIV-elicited injury. These effects are potentiated by second hits like alcohol. Here, we will focus on the incidence of HIV, clinical evidence of HIV-related liver damage, interactions between HIV and liver cells and the role of alcohol and co-infection with hepatotropic viruses in liver inflammation and fibrosis progression.
Collapse
Affiliation(s)
- Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, United States
| | - Larisa Y Poluektova
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Kusum K Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, United States
| | - Natalia A Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, United States
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68105, United States
| |
Collapse
|
49
|
Bailey KL, Kharbanda KK, Katafiasz DM, Sisson JH, Wyatt TA. Oxidative stress associated with aging activates protein kinase Cε, leading to cilia slowing. Am J Physiol Lung Cell Mol Physiol 2018; 315:L882-L890. [PMID: 30211654 PMCID: PMC6295504 DOI: 10.1152/ajplung.00033.2018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 08/24/2018] [Accepted: 08/27/2018] [Indexed: 11/22/2022] Open
Abstract
Older people are four times more likely to develop pneumonia than younger people. As we age, many components of pulmonary innate immunity are impaired, including slowing of mucociliary clearance. Ciliary beat frequency (CBF) is a major determinant of mucociliary clearance, and it slows as we age. We hypothesized that CBF is slowed in aging because of increased oxidative stress, which activates PKCε signaling. We pharmacologically inhibited PKCε in ex vivo mouse models of aging. We measured a slowing of CBF with aging that was reversed with inhibition using the novel PKC inhibitor, Ro-31-8220, as well as the PKCε inhibitor, PKCe141. Inhibition of PKCε using siRNA in mouse trachea also returned CBF to normal. In addition, antioxidants decrease PKCε activity and speed cilia. We also aged wild-type and PKCε KO mice and measured CBF. The PKCε KO mice were spared from the CBF slowing of aging. Using human airway epithelial cells from younger and older donors at air-liquid interface (ALI), we inhibited PKCε with siRNA. We measured a slowing of CBF with aging that was reversed with siRNA inhibition of PKCε. In addition, we measured bead clearance speeds in human ALI, which demonstrated a decrease in bead velocity with aging and a return to baseline after inhibition of PKCε. In summary, in human and mouse models, aging is associated with increased oxidant stress, which activates PKCε and slows CBF.
Collapse
Affiliation(s)
- Kristina L Bailey
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center , Omaha, Nebraska
- Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Kusum K Kharbanda
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center , Omaha, Nebraska
- Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
- Departments of Internal Medicine and Biochemistry and Molecular Biology, University of Nebraska Medical Center , Omaha, Nebraska
| | - Dawn M Katafiasz
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center , Omaha, Nebraska
| | - Joseph H Sisson
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center , Omaha, Nebraska
| | - Todd A Wyatt
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center , Omaha, Nebraska
- Department of Environmental, Agricultural, and Occupational Health, University of Nebraska Medical Center , Omaha, Nebraska
- Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| |
Collapse
|
50
|
Ganesan M, Poluektova LY, Enweluzo C, Kharbanda KK, Osna NA. Hepatitis C Virus-Infected Apoptotic Hepatocytes Program Macrophages and Hepatic Stellate Cells for Liver Inflammation and Fibrosis Development: Role of Ethanol as a Second Hit. Biomolecules 2018; 8:biom8040113. [PMID: 30322122 PMCID: PMC6316463 DOI: 10.3390/biom8040113] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 10/05/2018] [Accepted: 10/09/2018] [Indexed: 02/08/2023] Open
Abstract
Hepatocyte apoptosis is a crucially important mechanism for liver disease pathogenesis, and the engulfment of apoptotic bodies (AB) by non-parenchymal cells serves as a leading mechanism of inflammation and fibrosis progression. Previously, we have shown that hepatitis C virus (HCV) and alcohol metabolites induce massive apoptosis in hepatocytes and the spread of HCV-infection to the neighboring uninfected cells. Here, we hypothesize that the capturing of AB by non-parenchymal cells, macrophages and hepatic stellate cells (HSC) changes their phenotype to promote inflammation and fibrosis. In this regard, we generated AB from Huh7.5CYP2E1 (RLW) cells also treated with an acetaldehyde-generating system (AGS) and incubated them with human monocyte-derived macrophages (MDMs) and HSC (LX2 cells). Activation of inflammasomes and pro-fibrotic markers has been tested by RT-PCR and linked to HCV expression and AGS-induced lipid peroxidation in RLW cells. After exposure to AB we observed activation of inflammasomes in MDMs, with a higher effect of AB HCV+, further enhanced by incubation of MDMs with ethanol. In HSC, activation of inflammasomes was modest; however, HCV and AGS exposure induced pro-fibrotic changes. We conclude that HCV as well as lipid peroxidation-adducted proteins packaged in AB may serve as a vehicle for delivery of parenchymal cell cargo to non-parenchymal cells to activate inflammasomes and pro-fibrotic genes and promote liver inflammation and fibrosis.
Collapse
Affiliation(s)
- Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Larisa Y Poluektova
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Chijioke Enweluzo
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Kusum K Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Natalia A Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| |
Collapse
|